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Top-Rated Air conditioning pros in Lancaster - Updated Nov 2026

Avatar for Airco Home Comfort Services LLC
Airco Home Comfort Services LLC
4.7(
33
)
Central A/C - Install - For BusinessCentral A/C - Service or RepairCentral A/C - Service or Repair - For Business+2 more

Serving Lancaster, MA and surrounding areas

Approved

In business since 1998

Free estimates

Warranties offered

"Airco is a great family-owned and operated business, very fair and knowledgeable. They replaced our forced air central heating system (oil) in a day, and were quick to respond and get to work despite how busy things were during the January cold-spell. I would highly recommend for your heating and cooling needs!"
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+4

Response time2 days
1 neighbors recently requested a quote
Recommended by96%of homeowners
Avatar for New England Quality Air Solutions
New England Quality Air Solutions
4.7(
296
)
Air Ducts & Vents - Clean

Serving Lancaster, MA and surrounding areas

Approved

In business since 2005

Free estimates

Offers commercial services

"Deserving more than 5 stars on all. Customer Service which I had not experienced with duct cleaning + business previously ! explaining all their process before beginnng actual cleaning. I asked for several of their business cards to share! I have never done so with any other " cleaning " air quality Service! I had spoken to a local high sales realtor within the same morning to recommend, as I gave her his business cards! I will continue to recommend NEQAS to anyone I know who uses or will be needing such services. Taking pictures inside ducts ,before doing any work, directly in front of you is quite impressive display of honesty.comparing the before and after pictures are easy to recognize same ductwork. Honesty flows as a natural way of doing business. I am very impressed with total interactions from scheduling with Debbie, including her explanations of fees etc. and follow up emails, as we have bad to no cell service at location. Schedule was met entirely as planned. Would never call or recommend any other company. VT is lucky to have them Service`our area."
Before Cleaning-Air Ducts
Air Duct - After Cleaning
Before-Air Duct Cleaning
Air Duct Cleaning
Before-Air Duct Cleaning-Commercial

+6

Recommended by98%of homeowners
Avatar for Emerald HVAC LLC
Emerald HVAC LLC
4.9(
16
)
Central A/C - Service or Repair

Serving Lancaster, MA and surrounding areas

Approved

Super Service Award Winner

In business since 2024

Free estimates

Small jobs welcome

"My central AC unit has been broken for several years. intermittently working during hot summers. I've had several HVAC companies come to diagnose and all of them told me different things: replace the whole system, new lines, etc. potentially costing tens of thousands of dollars. So I decided to troubleshoot by myself and pinpointed the issue: the filter dryer needed to be replaced. No company wanted to do this small job. I called Emerald HVAC and told them about my issue, they sent in José, who diagnosed the issue to be what I said. He replaced the filter dryer and the AC unit works perfectly now after several years! In short, Emerald HVAC will be my first choice for any HVAC work in the future. They are honest, professional, and reasonably priced. I recommend them without reservation!"
Response time1 day
Response rate93%
34 neighbors recently requested a quote
Avatar for Earth Green Dryer Vent & Duct Cleaning
Earth Green Dryer Vent & Duct Cleaning
4.6(
818
)
Air Ducts & Vents - Clean

Serving Lancaster, MA and surrounding areas

Approved

Super Service Award Winner

In business since 1998

Free estimates

Emergency services offered

"Cleaned all ductwork for heating and air conditioning and left them immaculate. Cleaned dryer vent inside and outside and dry works so much better Truly professional and neat I would highly recommend"
 Before cleaning
 After cleaning
Truck Mount Duct Cleaning
Blower Motor Cleaning
Response time5 hrs
129 neighbors recently requested a quote
Recommended by94%of homeowners
Avatar for Rodenhiser Home Services
Rodenhiser Home Services
4.4(
522
)
Central A/C - InstallCentral A/C - Install - For BusinessCentral A/C - Service or Repair+3 more

Serving Lancaster, MA and surrounding areas

Approved

In business since 1928

Emergency services offered

Warranties offered

"Due to the pandemic it took a while for the park to come in, but after the park came in they were able to fix it the same day. They were terrific and very helpful. They provided portable AC units during the time when our AC was down. This was very good of the company to do."
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28 neighbors recently requested a quote
Recommended by86%of homeowners
Avatar for Pro Air Duct Cleaning, Inc.
Pro Air Duct Cleaning, Inc.
4.6(
54
)
Air Ducts & Vents - Clean

Serving Lancaster, MA and surrounding areas

Approved

In business since 2005

Free estimates

Offers commercial services

"Workers arrived on time, very professional. They did a great job and I would highly recommend them. I will hire them again when it s time for the air ducts to be cleaned."
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Air Vent
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Floor Vent

+12

Response time1 day
1 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Milltown Plumbing, Heating, AC, Drain Cleaning & Electrical
Milltown Plumbing, Heating, AC, Drain Cleaning & Electrical
4.4(
200
)
Central A/C - InstallCentral A/C - Service or RepairDuctless Mini-split A/C - Install or Replace

Serving Lancaster, MA and surrounding areas

Approved

In business since 1979

Credit card accepted

Customers say: Super punctual

"The service tech arrived a few minutes after the end of their arrival window. Reception did call to notify a slight delay. No big deal here. We reviewed the steps I took and after some preliminary inspection the tech revisited the system bleed. No air this time. It happens the boiler in question is a Burnham Revolution, notorious for various cryptic failures. We were discussing the inevitable replacement option when he homed in on the primary loop pump motor again and realized it was locked up. It had everyone fooled as it was vibrating as if it was operable, but hot a Hades due to the frozen prop shaft. This gig would probably have summed up @$600 but for the tricky diagnosis and my loquacious tendencies. At least I know who to call when I'm ready for that replacement/expansion."
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8 neighbors recently requested a quote
Recommended by87%of homeowners
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Air Conditioning FAQs, answered by experts

You can buy R-22 refrigerant for your home air-conditioning system through your local AC repair specialist, who can also refill your R-22 system as needed. You may find that the cost of R-22 has gone up due to shortages as the EPA banned this refrigerant. Ask your pro to inspect your system for any leaks or issues.

No, heat pump maintenance needs are very similar to air conditioners, including keeping outdoor units clean, changing filters regularly, and occasionally scheduling a refrigerant check to see if any has leaked out. Heat pumps typically switch automatically between heating and cooling, so you don’t need to worry about manually changing them every season. However, since they are always on call, they can develop wear and tear faster than an air conditioner.

The top reason to purchase an HVAC maintenance contract is the fact that it ensures you are detecting problems before they turn into expensive fixes. Secondly, this type of contract provides priority service, which is nice if it’s peak busy season. Finally, an HVAC maintenance contract provides discounts on parts and labor for repairs, which can save you a good amount of money if your unit breaks.

A damper motor can last up to 15 years, but it can wear out more quickly than that if you run your HVAC unit a lot. So you might expect a longer life in a colder climate than if you live in a warmer climate.

Your AC might not cool after a power outage because of a tripped circuit breaker, blown fuse, or damage to the compressor or capacitor. If you notice your AC not working after a power outage, in most cases, the breaker has tripped or the system has built-in brownout and blackout protection. Reboot the AC by turning it off at the thermostat, resetting the circuit breaker, and waiting 30 minutes to turn the AC on again. 

The Lancaster, MA homeowners’ guide to air conditioning services

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