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Find Air conditioning pros in Oneco

Bill Aitken Heating, LLC
4.8(
46
)

Serving Oneco, CT and surrounding areas

Approved

In business since 1990

Free estimates

Credit card accepted

"We hired Bill Aitken Heating to repair our gas furnace, we had an accumulation of water in the furnace pan. I called Aitkens Heating and received a call back immediately. They were here promptly at the time scheduled for repair. Mr. Aitkens had my furnace repaired within a half hour. He arrived with his helper and I could not be more satisfied with the work these gentlemen did. Bill took the time to explain in detail what he did for the repair. Bill Aitken is our GO TO man for any of our heating and air condition maintenance. I would like to add he was very reasonable. My husband was not available to over see this project so I handled the whole project from start to finish. BILL AITKEM HEATING LLC. comes very highly recommended by the Perkins family."
3 neighbors recently requested a quote
Recommended by89%of homeowners
Avatar for Phalan Construction & The Handyman
Phalan Construction & The Handyman
4.8(
325
)

Serving Oneco, CT and surrounding areas

Approved

Super Service Award Winner

In business since 1988

Emergency services offered

Warranties offered

"I recently had an old deck removed and replaced with a stone patio. The portion of my house where the deck previously contacted my house needed replacement shingles. Despite rainy weather conditions the day of the job, Bob was able to get the job done. I would highly recommend him."
Additional Photos
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Recent Basement Alteration
2
Recent Bathroom

+33

3 neighbors recently requested a quote
Recommended by89%of homeowners
Neftco Mechanical LLC
5.0(
1
)

Serving Oneco, CT and surrounding areas

Approved

In business since 2009

Free estimates

Warranties offered

NEFTCO Mechanical Heating and Cooling is committed to excellence every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and responsibility in all of our jobs. We are a locally owned and operated business with more than 15 years of experience serving Connecticut and surrounding areas. There is no job too big, or too small for our team. Call today and let us put our experience to work for you!

HVAC!
HVAC!
HVAC!
HVAC!
HVAC!

+10

Recommended by100%of homeowners
Avatar for ASL Mechanical Services LLC
ASL Mechanical Services LLC
New to Angi

Serving Oneco, CT and surrounding areas

Approved

In business since 2025

Free estimates

Emergency services offered

Welcome to ASL Mechanical Services LLC! We take pride in the quality of work and customer satisfaction that we give each and every customer! We are known to pay exquisite attention to detail while making customer satisfaction our top priority. Call us today to learn more about how we can help you!\n

Gallery
Gallery
Gallery
Gallery
Condenser

+2

2 neighbors recently requested a quote
Avatar for NEW ENGLAND SMART ENERGY
NEW ENGLAND SMART ENERGY
4.9(
13
)

Serving Oneco, CT and surrounding areas

In business since 2009

Emergency services offered

"They found some different aspects of my home that need some work. We plan on having some insulation placed in to help with this. I give them all A's. Everything was perfect."
Additional Photos
Additional Photos
Additional Photos
NESEG Certified Techs
Blower Door Test

+38

Recommended by91%of homeowners
Avatar for Northern Lights Electric Inc
Northern Lights Electric Inc
4.7(
1,125
)

Serving Oneco, CT and surrounding areas

In business since 1999

Free estimates

Credit card accepted

"Great company to deal with. Provided a detailed quotation, worked diligently to schedule the job quickly, electricians arrived on time and completed the installation seamlessly, as two of the outlets were a bit tricky to access. Would hire them again without reservation."
EV Charger
Portable Generator
Outdoor Lighting
Ceiling Fans
Multi-Family Service Upgrade

+23

Recommended by93%of homeowners
Avatar for North Alabama Technical Services
North Alabama Technical Services
4.9(
124
)

Serving Oneco, CT and surrounding areas

In business since 2010

Emergency services offered

Credit card accepted

"Excellent service which provided outstanding results.  Computer was running so slow my wife wanted me to buy another computer.  Using Angies List I was able to find this company who I called right away.  I made arrangements to drop off my laptop on Friday night and was able to pick it back up Sunday afternoon.  Took it home and it runs just like the day i bought it.  James loaded virus protection software which works better than the software I bought.  Very goodexperience, i will use him again.
"
2014 Super Service Award Winner!
Additional Photos
Recommended by97%of homeowners
Avatar for Sears Heating and Cooling - Hartford
Sears Heating and Cooling - Hartford
3.8(
41
)

Serving Oneco, CT and surrounding areas

In business since 1893

Free estimates

Warranties offered

"Sears may have a good product, but I was very uncomfortable with the guy they sent out to give a "quote". It isn't a quote, it's a sales pitch and it ate up over 2 hours of our time! The salesman was very nice and seemed like a good guy, but he was overselling sears and putting down ind. contractors and it put me off. Aside form that, their quote was 2/3 higher than anywhere else. $23,000 for central air just wasn't worth it for us."
Recommended by78%of homeowners
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Showing 1-10 of 60

FAQs for air conditioning projects in Oneco, CT

Most professional HVAC technicians require two to three hours to complete an expansion valve replacement. The timeframe depends on your unit's accessibility and whether additional repairs are needed. The process involves recovering refrigerant, removing the old valve, installing the new component, and recharging the system. Scheduling during less busy seasons may result in more convenient appointment times.

Operating your air conditioner with a malfunctioning expansion valve isn't advisable. Continuing to run the system could potentially damage other components, particularly your compressor, which is significantly more expensive to replace. If you notice performance issues like inconsistent cooling or unusual noises, it's best to have your system inspected before continuing regular use.

Expansion valves don't have a standard replacement schedule, as their longevity depends on system usage, maintenance frequency, and environmental factors. Regular professional maintenance helps identify potential valve issues before they cause system failure. Having your HVAC system serviced annually allows technicians to monitor component condition and recommend preventative replacements when necessary.

Refrigerant leaks require prompt professional attention. If your expansion valve is leaking, you'll likely notice reduced cooling performance and possibly hear hissing sounds near the unit. Addressing leaks quickly prevents further system inefficiency and avoids the environmental impact of released refrigerant. Your HVAC technician will need to repair the leak and recharge the system with the proper refrigerant type and amount.

Because many AC issues present similar symptoms, professional diagnosis is recommended. Problems like inadequate cooling, inconsistent temperatures, or strange noises could indicate expansion valve issues, but might also stem from refrigerant leaks, electrical problems, or airflow restrictions. A qualified HVAC technician has the tools and expertise to accurately identify the root cause and recommend appropriate repairs.

The Oneco, CT homeowners’ guide to air conditioning services

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