faqs
Everything you need to know about HVAC—made simple.
Have questions? We’ve got answers. From system tune-ups to energy-saving tips, here’s how to keep your home running smoothly year-round.
FREQUENTLY ASKED QUESTIONS
We’ve organized our most common questions to help you get quick, helpful answers about heating, cooling, and everything in between. Don’t see what you’re looking for? Call us at (661) 499-9691—we’re happy to help.
hvac faqs
How much of my energy bill comes from heating and cooling?
Heating and cooling usually make up the largest portion of a home’s energy usage—often around 40% to 50% of your total utility bill. In Arizona’s climate, especially during scorching summers and chilly desert nights, your HVAC system works overtime to keep your home comfortable.
What affects those energy costs?
Several key factors influence how much you’ll spend on heating and cooling each month:
The Arizona climate – Extreme temperatures mean your AC or furnace is working harder and more often.
Home insulation – Poor insulation or air leaks let treated air escape, forcing your system to run longer.
System efficiency – Older or neglected HVAC systems use more energy. Modern systems with high SEER or AFUE ratings are designed to perform better and cost less to operate.
Thermostat use – The temperature you set and how often you adjust it can impact energy consumption.
Your daily habits – Leaving the system running all day or forgetting to change filters regularly can drive up costs.
How can I lower my HVAC energy bills?
Here are a few practical ways to cut down on energy expenses:
Upgrade to energy-efficient equipment
Use a smart thermostat for better control
Seal windows and doors to prevent air loss
Change air filters every 1–3 months
By staying proactive, you can reduce wear on your system, lower your monthly bills, and stay more comfortable—no matter the weather.
Why is my AC unit making so much noise outside?
If your outdoor air conditioning unit sounds louder than normal, it could be signaling a problem—anything from a loose bolt to a worn-out compressor. While some noises are harmless, others can point to serious issues that need attention.
Here are a few common reasons your outdoor unit might be noisy:
Debris in the fan
Leaves, sticks, or rocks can get caught in the fan blades, causing clanking or buzzing sounds. Turn off the unit and check for visible debris—never stick your hand in while it’s running.Loose or rattling parts
Over time, screws or brackets can shake loose from vibration. If you hear rattling or banging, parts may just need tightening—but let a pro confirm it’s nothing more serious.Worn fan motor or bearings
Grinding, screeching, or squealing sounds often mean the fan motor or its bearings are failing. These parts typically require professional replacement.Damaged or unbalanced fan blades
Bent blades can cause vibration and loud thumping. If you notice wobbling or visible damage, it’s time for a repair or replacement.Aging or noisy compressor
As compressors age, they can become louder—or even start to fail. If the noise is coming from the heart of your system, call a technician for inspection.Refrigerant issues
Low refrigerant levels or leaks can cause the system to work harder and run louder. If you hear a hissing sound or notice a drop in performance, let a professional check it out.Lack of maintenance
Regular maintenance keeps your system running quietly and efficiently. If your unit hasn’t been serviced in a while, schedule a tune-up to prevent bigger issues down the road.
Bottom line:
A loud HVAC unit is your system’s way of asking for help. Don’t ignore the noise—catching problems early can prevent costly breakdowns and extend your system’s life.
Is it normal for my system to run all the time?
If your heating or cooling system seems like it never takes a break, you’re not alone—but whether that’s normal depends on several key factors. Sometimes it’s expected, but in other cases, it’s a red flag.
When Continuous HVAC Operation Is Normal:
- Extreme temperatures: During long stretches of scorching heat or chilly weather, your system may run continuously to keep your home at a comfortable temperature—especially in Arizona’s summer highs.
- High-efficiency systems: Newer systems with variable-speed motors are designed to run longer at lower speeds. This helps maintain consistent comfort and better humidity control without using excess energy.
- Zoned or balanced setups: Some homes are equipped with HVAC systems that run more consistently by design to improve air circulation and indoor air quality.
When It Could Be a Problem:
- System is undersized or oversized: A unit that’s too small might run nonstop trying to keep up. A unit that’s too large might short cycle instead (frequent starts and stops). Either can be inefficient and costly.
- Lack of maintenance: Dirty filters, clogged coils, or low refrigerant levels can cause your system to work harder and longer than it should.
- Poor insulation or air leaks: If your home lets in outside air through cracks, gaps, or thin insulation, your HVAC system has to overcompensate to maintain your desired temperature.
- Thermostat trouble: A faulty or poorly placed thermostat can send incorrect signals to your HVAC system, causing it to run when it doesn’t need to.
What You Can Do:
- Check your air filter: A clogged filter reduces airflow and makes your system work overtime. Change it every 1–3 months.
- Inspect your thermostat: Make sure it’s reading accurately and set to a realistic temperature. Avoid placing it near direct sunlight or vents.
- Seal leaks & improve insulation: Older windows, doors, and attics can let in outdoor air. Sealing and insulating can help reduce HVAC strain.
- Schedule a professional inspection: Our licensed technicians at Murphy’s Heating & Air can diagnose why your system is running constantly and help improve its efficiency.
How Often Should My HVAC System Be Serviced?
To keep your heating and cooling system running efficiently and reliably, regular maintenance is key. At Murphy’s Heating & Air, we recommend a proactive approach that prevents costly breakdowns and keeps your home comfortable year-round.
General Maintenance Guidelines:
Twice a Year
Your HVAC system should be professionally serviced two times per year:
- Spring: Tune-up your air conditioner before the Arizona heat hits.
- Fall: Get your furnace checked before cooler temps roll in.
This seasonal schedule ensures your system is prepped and ready for peak usage during summer and winter.
Specific System Recommendations:
Air Conditioner
Schedule spring maintenance to clean coils, check refrigerant levels, test safety controls, and make sure the unit is cooling efficiently before the high temps arrive.
Furnace
Book fall service to inspect burners, change filters, test for gas leaks or carbon monoxide, and confirm your furnace is safe and reliable for the colder months.
Air Filters
Check monthly and replace every 1 to 3 months, depending on your filter type, lifestyle, and whether you have pets or allergies. Clean filters = better airflow and cleaner air.
Why Regular Maintenance Matters:
- Improves energy efficiency and helps lower monthly bills
- Extends system lifespan by catching issues early
- Reduces unexpected breakdowns (especially in extreme weather)
- Enhances indoor comfort with better temperature and humidity control
- Boosts air quality by reducing dust, allergens, and contaminants
- Keeps your family safe, especially with gas or electric heating systems
Will Setting My Thermostat to a Certain Temperature Save Money?
Yes—being smart about your thermostat settings can absolutely help you cut down on energy costs. When used correctly, your thermostat becomes a powerful tool for lowering your monthly bills without sacrificing comfort.
Best Temperature Settings for Savings
In Winter:
Set your thermostat to 68°F during the day when you’re home, and lower it by 7–10 degrees at night or when you’re away. This simple adjustment can reduce heating costs by up to 10% annually.
In Summer:
Aim for 78°F while you’re home and awake. If you’re out or asleep, raise the temperature a few degrees. The smaller the difference between your indoor and outdoor temps, the less energy your system needs to use.
Programmable Thermostats Make It Easier
A programmable thermostat can automate your settings based on your schedule:
- Morning: Warm up or cool down before you wake up.
- Daytime: Dial back usage while the house is empty.
- Evening: Return to a comfortable temperature by the time you get home.
- Overnight: Adjust settings while you sleep to save energy.
Go Even Smarter with a Smart Thermostat
Smart thermostats take efficiency a step further:
- They learn your habits and adjust automatically.
- Remote access lets you control temps from anywhere.
- Energy usage reports give insight into how to save more.
- Zoning features allow different temps in different rooms (if your home is set up for it).
Don’t Forget: Efficiency Starts with a Healthy System
No matter how well you manage your thermostat, you’ll only get results if your HVAC system is running efficiently. Keep filters clean, book seasonal maintenance, and make sure your unit isn’t overworked due to dirty coils or airflow restrictions.
Why “Getting 3 Quotes” Might Not Be the Best Way to Buy an AC
It’s common advice: “Always get three quotes before you replace your air conditioner.” But while this sounds smart in theory, focusing only on price can actually lead to costly mistakes. When it comes to HVAC systems, the cheapest option isn’t always the best—and it could cost you more in the long run.
Here’s Why That Strategy Falls Short:
1. Price Doesn’t Tell the Whole Story
Choosing an AC system based solely on the lowest quote can lead to:
- Cheap equipment that doesn’t last or run efficiently.
- Poor workmanship from less experienced installers.
- Higher long-term costs due to frequent repairs, energy waste, or early replacement.
2. You Need a Custom Solution—Not a Cookie-Cutter Quote
Every home is different. A high-quality contractor will assess:
- Your home’s layout
- Insulation and ductwork
- Cooling needs based on square footage and sun exposure
Contractors who skip these steps might give you a lower quote—but that system could be incorrectly sized, inefficient, or poorly installed.
3. Not All Installers Offer the Same Support
Some contractors disappear after the install. Others—like Murphy’s—stand by their work. A slightly higher quote might include:
- Better warranty coverage
- 24/7 support if something goes wrong
- Honest communication and upfront pricing
These things matter a lot more once the job is done.
4. Low Quotes Often Leave Out Key Details
Watch out for:
- Hidden fees
- Excluded services (like ductwork updates or system disposal)
- Bare-bones installations that skip important steps
At Murphy’s, we give you a complete picture up front—so there are no surprises later.
A Better Approach: Choose Value Over Just Price
Instead of comparing just three quotes, compare what you’re actually getting:
- Is the system right for your home?
- What’s included in the warranty?
- How reputable is the company?
- Are they licensed, insured, and experienced?
Look for a team that listens, explains your options clearly, and recommends what’s best for you—not just what’s cheapest.
How Often Should I Change My HVAC Air Filter?
Changing your air filter is one of the easiest—and most important—ways to keep your HVAC system running efficiently. But how often should you actually do it? The answer depends on a few key factors like your filter type, lifestyle, and indoor air quality needs.
General Rule of Thumb:
For standard 1–3 inch filters, aim to replace your filter every 1 to 3 months. A quick monthly check is always a good idea—if the filter looks dirty, swap it out.
When to Replace Filters More Frequently:
- Allergy Sufferers: Every 30–45 days. Clean filters help reduce allergens and improve indoor air quality.
- Pet Owners: Every 60 days—or even monthly if you have multiple pets or heavy shedders.
- Families with Kids: Every 2–3 months to help maintain a healthier home environment.
- High Use Homes: During peak heating or cooling seasons, you may need to change filters more often.
- Poor Outdoor Air Quality: If you live in a dusty or high-pollution area, plan on more frequent replacements.
When You Can Stretch It:
- Vacation Homes or Low-Use Properties: Every 6–12 months may be sufficient.
- Single-Person Households Without Pets or Allergies: Every 3 months should be fine—just don’t forget to check periodically.
Filter Type Matters:
- HEPA or High-Efficiency Filters: These may last longer, but should still be checked regularly for buildup.
- Washable Filters: These need to be cleaned on a schedule rather than replaced.
Keep Your System Running at Its Best
Dirty filters restrict airflow, reduce efficiency, and can lead to expensive repairs down the line. Replacing them on time improves air quality, reduces energy use, and helps your system last longer.
General faqs
Why Recommend Murphy’s Heating & Air to Friends and Family?
When you’ve had a great experience with a home service provider, it’s natural to want your loved ones to enjoy the same peace of mind. At Murphy’s Heating & Air, we make it easy to confidently refer your friends and family—and here’s why:
1. Service You Can Count On
From heating and AC repairs to full system installations, Murphy’s delivers dependable, high-quality work every time. We don’t cut corners—we show up on time, do the job right, and leave your home better than we found it.
2. Friendly, Certified Technicians
Our team isn’t just trained—they’re respectful, knowledgeable, and great at what they do. We treat every home like it’s our own and every customer like family.
3. Straightforward Pricing, No Games
At Murphy’s, honesty isn’t just a slogan—it’s a core value. We provide clear, upfront pricing so your friends won’t be blindsided by hidden fees or surprise add-ons. What we quote is what you pay.
4. Customized Comfort Solutions
Whether it’s a historic home or a new build, we take time to understand each space and recommend HVAC options that match its unique layout, usage, and energy needs.
5. Local Expertise You Can Trust
Based in Scottsdale, Murphy’s knows how to tackle the challenges of Arizona’s climate. From scorching summers to chilly nights, we design systems that perform well—year after year.
6. Top-Notch Customer Support
Need a quick answer or emergency service? Our team is responsive, helpful, and genuinely cares. We don’t just install and disappear—we’re here for the long haul.
7. Clean Work, Respectful Crews
We show up in branded vehicles, wear shoe covers in your home, and clean up after ourselves. Referring Murphy’s means your friends won’t have to worry about messes or miscommunication.
Why Would Your Mom Recommend Murphy’s Heating & Air?
If your mom had a great experience with Murphy’s Heating & Air, chances are she’s telling everyone she knows—and for good reason. Here’s why moms (and dads too!) confidently refer us to their neighbors, friends, and family:
1. We Show Up When We Say We Will
Punctuality matters. Your mom likely appreciated that our team arrived on time, treated her home with care, and finished the job when promised—no stress, no rescheduling headaches.
2. Honest Service, No Gimmicks
Murphy’s is built on honesty. We don’t upsell what’s not needed, and we make sure every recommendation has your best interest in mind. Moms love knowing they’re getting straight answers and fair pricing.
3. Kind, Respectful Technicians
Our technicians are not only highly trained—they’re also courteous, patient, and respectful. Whether it was explaining the issue clearly or wearing boot covers in her home, the little things go a long way.
4. We Keep Her Comfortable—Year Round
From scorching summers to chilly desert nights, Murphy’s helps keep her home just the way she likes it. Reliable comfort without sudden breakdowns is a big win in Mom’s book.
5. Clear Communication
No confusing jargon or unanswered questions. We walk our customers through every step, making sure they understand the work being done. Your mom probably appreciated feeling informed and in control.
6. We Treat Her Like Family
At Murphy’s, we don’t see clients—we see neighbors. We bring warmth, care, and a personal touch that reminds your mom of how business used to be done: with pride and integrity.
Why Is It Important to Hire a Company with Active Workers’ Comp and Liability Insurance?
Before hiring any HVAC company, there’s one question you should always ask:
Do they carry current workers’ comp and liability insurance?
At Murphy’s Heating & Air, we do—and here’s why that matters for you.
1. You’re Protected From Unexpected Costs
If a technician gets injured on your property and the company isn’t insured, guess who could be held responsible? You. Workers’ compensation insurance protects you from that risk—covering medical bills and lost wages without dragging you into legal trouble.
2. Damage? You’re Covered.
Accidents can happen, even with experienced crews. Liability insurance ensures that if anything gets damaged—your walls, floors, or even your HVAC system itself—it won’t come out of your pocket.
3. It’s a Sign of a Legit Business
Carrying up-to-date insurance isn’t optional—it’s a legal requirement in most states. A company that skips this step is cutting corners, and probably cutting others too. We play by the rules because doing the job right starts before we walk through your door.
4. It Shows We Take Safety Seriously
Insurance coverage means we follow safety protocols, protect our team, and protect our customers. It’s more than paperwork—it’s part of our commitment to quality and responsibility.
5. You Get Peace of Mind
When you hire Murphy’s, you’re hiring professionals who’ve taken every measure to ensure a safe, secure, and worry-free service. You can focus on your home comfort—without wondering, “What if?”
How Can I Tell If a Company Is Truly Locally Owned or Backed by a Private Equity Group?
If you’re trying to support a local business, it’s smart to look beyond the logo and figure out who’s really running the show. Some HVAC companies might market themselves as local—but are actually owned by out-of-state investment groups or private equity firms. Here’s how to find out who’s really behind the name on the truck:
1. Start with Their Website
Check the “About Us” page—a truly local company will usually name its founders, share how it got started, and talk about its ties to the community.
Tip: Watch out for vague language like “founded by industry professionals” with no names or local history.
2. Search Business Records
Look up the company on your state’s Secretary of State website. You can often see who the registered agent is, when the business was formed, and if there have been any recent changes in ownership.
3. Tap Into Local Networks
Check if the business is a member of the local Chamber of Commerce or supports neighborhood events and charities. Locally owned companies are usually active in their communities—and proud of it.
4. Dig into the News
Search for the company name online along with terms like “acquisition,” “private equity,” or “merger.” Local news stories or industry blogs may report when companies are bought out or rolled into larger corporations.
5. Watch How They Communicate
Check out their social media and customer reviews. Real local companies usually highlight their team, customers, and community—while investor-owned ones may focus more on offers and branding with little personal touch.
6. Ask Them
Still not sure? Just ask:
“Is your company locally owned, or are you part of a larger investment group?”
A local company won’t hesitate to answer.
Why should I replace my HVAC system before it fails completely?
It might seem like a good idea to wait until your HVAC system completely fails before replacing it—but in many cases, preemptively upgrading your system is actually the smarter (and more cost-effective) move. Here’s why homeowners in Scottsdale and surrounding areas choose to replace before a breakdown:
1. Avoid Emergency Breakdowns
No surprise failures during extreme weather.
System failures always seem to happen during Arizona’s hottest days or coldest nights. A planned replacement helps you avoid emergency service calls and the stress of being without heating or cooling when you need it most.
Schedule on your terms.
Instead of rushing into a replacement during a busy time of year, you get to choose the installation date—no scrambling, no disruption.
2. Save Money Over Time
Lower monthly utility bills.
Newer HVAC systems are significantly more efficient, which means your system won’t have to work as hard to cool or heat your home—resulting in noticeable savings on energy bills.
Avoid throwing money at repairs.
Old systems often need frequent fixes. If you’re constantly paying for parts and labor, that money could be better invested in a reliable new system.
Ditch outdated refrigerants.
If your system uses R-22 (Freon), it’s no longer being produced—making it harder and more expensive to replace. New systems use environmentally friendly refrigerants that are easier to service.
3. Improve Comfort and Reliability
Consistent temperatures and better airflow.
Newer systems distribute air more evenly, reduce humidity, and keep your home feeling just right all year long.
Fewer breakdowns, more peace of mind.
Modern systems are built to last and come with fewer mechanical issues, so you’re not constantly worrying about what might go wrong next.
4. Get Access to the Latest Technology
Smart home integration.
Upgrade to features like programmable thermostats, zoning systems, and app-based controls—perfect for today’s connected households.
Warranty protection.
Most new HVAC systems come with strong manufacturer warranties, protecting you from major repair costs for years after installation.
5. Boost Home Value
A new HVAC system is a selling point that future buyers care about. Whether you’re planning to sell or just want to protect your investment, upgrading your system can raise your home’s resale value and marketability.
6. Reduce Your Environmental Impact
Modern HVAC systems are designed to be more energy-efficient and environmentally friendly—cutting your home’s carbon footprint while keeping it comfortable.
Why Can’t You Just Give Me a Price if I Already Know What I Need?
We totally get it—when you’re planning a big decision like an HVAC repair or replacement, you want to know the cost upfront. But even if you think you know exactly what you need, there are a few important reasons we can’t always give a firm price over the phone or online:
1. Every Home Is Different
Even similar systems don’t always mean similar installs.
The size and layout of your home, existing ductwork, electrical setup, and insulation all affect what your system needs to operate safely and efficiently. What works for one home might not work for yours without adjustments.
2. We Believe in Precision—Not Guesswork
We don’t do one-size-fits-all quotes.
We want to make sure you get the best solution, not just a ballpark price that might change later. Our team takes the time to assess your home, listen to your goals, and make sure everything from sizing to airflow is dialed in.
3. Market Prices Change
Equipment and material costs can shift.
HVAC systems involve specialized parts and equipment, and prices can fluctuate due to availability or supply chain factors. We want to give you the most accurate and up-to-date pricing possible—no surprises, no hidden fees.
4. You Deserve the Full Picture
A proper evaluation helps prevent costly surprises later.
We’ve seen it too many times—companies throw out a low quote without checking the job first, only to tack on extra charges after work begins. That’s not how we do business at Murphy’s. We’d rather take a little more time upfront to give you a real, honest number you can count on.
Do I Need to Be Home or Can I Just Leave My Door Unlocked?
We understand that life gets busy, and it’s not always easy to be home during your service appointment. That said, your home’s security and our team’s accountability are important. Here’s what to know:
Best Option: Be Present or Send a Trusted Contact
Whenever possible, we recommend that you or another responsible adult be home during your appointment. This allows our technician to walk you through any updates, get approval if something unexpected comes up, and ensure everything runs smoothly.
If You Can’t Be There: Here Are Your Options
- Lockbox or Smart Lock Access: If you have a secure way to provide entry—like a lockbox or a smart lock code—we’re happy to use it. Just let our office know ahead of time.
- Designated Contact: You can arrange for a trusted neighbor, friend, or family member to be present during the visit.
- Reschedule: If neither of those options work, we’re happy to help you find a better time.
Why We Can’t Accept an Unlocked Door
For your safety and ours, we cannot enter a home that’s simply been left unlocked. Every visit needs to happen under secure and documented conditions to protect both your property and our technicians.
HVAC Service Built Around Your Home
We do more than fix systems — we show up, listen, and deliver comfort with care. Here’s what sets Murphy’s Heating & Air apart:
Family-owned, community-focused
Murphy’s is built on values — not quotas — and we take pride in serving our neighbors.
Real Reviews, Real Results
Our reputation is built on honest work and word of mouth. See why local homeowners keep coming back.
Straightforward Pricing
No hidden fees. No surprises. Just fair, upfront quotes every time.
A Name You'll Remember
We’re not some faceless franchise — we’re the team that actually picks up the phone and stands behind our work.