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Find Central a/c service or repairers in Waltham

Avatar for Metro West Mini Splits
Metro West Mini Splits
4.93(
15
)

Angi Approved

In business since 2022

Free estimates

Emergency services offered

"Metro West Mini Splits recently installed 6 mini splits in February 2025 to our new home in Marlborough, MA. Alan, Jamie, and their team were so kind, respectful, knowledgeable, timely, communicative, and easy to work with. We could not be happier with the final product! Metro West Mini Splits was also very reasonably priced, and they made the Mass Save rebate process a breeze. 100% would recommend to anyone needing heating or cooling services!"
Recommended by73%of homeowners
Avatar for Precise Property Solutions, LLC
Precise Property Solutions, LLC
5.00(
2
)

Angi Approved

In business since 2023

Free estimates

Emergency services offered

"Shawn Thompson did a great job diagnosing our AC issue and repairing it promptly. He is an above-and-beyond the call of duty kind of guy who came out after hours to help us out during a heat wave. I couldnâ t recommend him more highly."
Recommended by100%of homeowners
B & M Mechanical, Inc.
4.91(
18
)

Angi Approved

In business since 2004

Free estimates

Emergency services offered

"The first HVAC contractor (a national chain) I had in to look at my central A/C diagnosed the air handler's fan blowing backwards as a result of a lightning strike scrambling the circuitry. (I told them about the lightning strike in the interest of full disclosure.) This other contractor said it likely needed a new fan but because of the strike they would not repair it. Instead, they would only replace the entire air handler...to the tune of $5700. We were prepared to suffer through the imminent heat wave and fork over the big bucks, but I wanted to get at least one other quote. I had found B&M on HomeAdvisor and requested an appt for a quote. HomeAdvisor wound up canceling the appt because they hadn't heard back from B&M. I decided to call directly. I talked to Paul M and he said they were so busy and couldn't commit to the HomeAdvisor appt time but that they would squeeze me in. I was expecting only a quote, but they didn't give up and wound up fixing it on the spot. It's been working like a champ through the heat wave, and it only cost me $217. Paul even followed up a few days later to ask how it was performing. I highly recommend B&M."
3 neighbors recently requested a quote
Recommended by66%of homeowners
Clean Coils HVAC
New to Angi

Angi Approved

In business since 2014

Clean Coils HVAC, is committed to excellence in every aspect of our business. We uphold a standard of integrity bound by fairness, honesty, and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customers' interests and make their concerns the basis of our business.

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FAQs for central a/c service or repair projects in Waltham, MA

A condenser fan motor is a crucial part of your air conditioner that prevents the compressor from overheating. It pulls heat from your AC unit to cool the refrigerant moving through the condenser coils. This allows your system to blow cool air and keeps everything running smoothly.

The most common causes of AC fan motor failure include loss of lubricant in the system due to overheating and a rusted or leaking run capacitor. Poor lubrication can also cause failure in the belt drive, which may impact the AC fan motor. Weather and electrical components can also affect your AC. For example, a storm could send water into your motor windings and damage the internal components.

Air conditioner fan motors last about 12 years on average, though they can last longer if maintained well. This includes keeping them clean and cooled as needed with annual air conditioner checkups. Routine maintenance is essential to catch AC fan issues early. An HVAC inspection can cost between $70 and $500, while AC cleaning services may range from $100 to $400.

A broken AC fan motor may need replacement because this part usually can’t be repaired. Several things indicate it’s time to replace your AC fan motor, including buzzing noises, a constantly running fan, unusually high energy bills, or an aging system. If you notice these signs, call an HVAC pro for help before the faulty motor starts to strain other parts of the AC system.

There are clear warning signs of a bad AC fan motor, including unusual interruptions in the fan operation. The motor might be malfunctioning if you hear weird noises like grinding or rattling or if the fan continues to spin when the unit is off. These indicators compromise your AC’s cooling performance and increase your energy costs. Addressing these issues immediately by contacting a trusted HVAC professional prevents further damage and safeguards your HVAC's efficiency.

Replacing your AC fan motor takes a professional one to four hours. The technician will start by assessing your system and safely removing the damaged motor. If a new part needs to be ordered, it might take a few days. Once the part is available, your pro will install it properly and make sure your system is running smoothly.

The Waltham, MA homeowners’ guide to central a/c service or repairs

From average costs to expert advice, get all the answers you need to get your job done.

  • Detail of a HVAC system outside a brick house

    The cost of replacing an AC unit fan motor depends on warranties, labor, season, and more. This cost guide covers everything you need to know about this HVAC part.

  • A boy changing thermostat’s temperature using a smartphone

    Budget for AC coil cleaning costs based on factors such as cleaning frequency, coil type, cleaning method, accessibility, ongoing maintenance, and more.

  • home air conditioner being recharged with freon

    Need an AC Recharge? Here’s how much it costs, what factors affect cost, and what to expect.

  • House humidifier on a return duct

    Wondering who installs whole-house humidifiers? Hire a licensed HVAC technician. Learn what they do, other pro options, and how to hire confidently