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Find Air conditioning pros in Portland

Avatar for Advanced Mechanical Services LLC
Advanced Mechanical Services LLC
4.8(
19
)

Serving Portland, CT and surrounding areas

Approved

In business since 2001

Free estimates

Emergency services offered

"So many choices when your looking for a company to service your heating and air conditioning needs. When we reached out on social media for suggestions for a reputable and reliable company so many people highly recommended Advanced Mechanical Services that we wondered if it was for real. Well now you can count us among the believers. From the moment Deena took our phone call till Rob and Ian arrived at our home and completed the work on-site, these incredibly talented and professional people did their job on time, as promised, with courtesy and knowledge and quickly identified and fixed both our heating and air conditioning issues that three other companies that we paid big money to in the past could not figure out. Their reasonable bill for quality work was another surprise. And they were COVID compliant and respectful with masks AND gloves which made us feel comfortable (as senior citizens) having them come into our home to do work."
Response time1 day
10 neighbors recently requested a quote
Recommended by100%of homeowners
Avatar for MULL BROTHERS INC
MULL BROTHERS INC
4.7(
118
)

Serving Portland, CT and surrounding areas

Approved

In business since 1945

Free estimates

Emergency services offered

"It was one very quickly and efficiently. The owner and workers were very professional and Knowledgeable. All old equipment was removed. I would recommend them to anyone I know."
Additional Photos
Additional Photos
Additional Photos
Additional Photos
Response time2 days
5 neighbors recently requested a quote
Recommended by95%of homeowners
Avatar for Omni Mechanical Services, LLC
Omni Mechanical Services, LLC
4.3(
15
)

Serving Portland, CT and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"Excellent. Very good people. Everything they said about the unit was absolutely true. Very clean install. The estimate of the dollars was right."
Response time2 days
6 neighbors recently requested a quote
Recommended by83%of homeowners
Avatar for Valerie Spencer Interiors LLC
Valerie Spencer Interiors LLC
5.0(
88
)

Serving Portland, CT and surrounding areas

Approved

In business since 2007

Free estimates

Warranties offered

"I have to say that Mike was very professional and fast at his job, he did a great job and was polite,I have to say that I would definitely hire Mike again! 😉😉"
Additional Photos
Additional Photos
Response time2 days
1 neighbors recently requested a quote
Recommended by98%of homeowners
Avatar for The Builders & Cleaners
The Builders & Cleaners
4.9(
119
)

Serving Portland, CT and surrounding areas

Approved

In business since 2018

Free estimates

Emergency services offered

"i desperately needed gutter cleaning the day before a major storm. I spoke with Dave initially and he worked with me to make it possible and sent out his crew by the afternoon to my house. His crew was so professional and worked very hard to make sure that all the work was done for me and they cleaned up and got rid of all the mess. This company could not have been nicer and helpful. I highly recommend them and am thankful that I found their business."
Dust out from the ductwork
Dust out from the ductwork
Clean vent
Clean vent
Dust in the return

+1798

Response time1 day
Response rate92%
Recommended by88%of homeowners
Avatar for Cromwell Energy, Inc.
Cromwell Energy, Inc.
4.4(
8
)

Serving Portland, CT and surrounding areas

Approved

In business since 1985

Free estimates

Emergency services offered

"For the past 4 years I have depended on Cromwell Energy to perform annual preventive maintenace on my two furnaces / AC units, plus hot water heater. They always show up on time, friendly techs who know their trade, and are very thorough in assesing each component. They are neat in their work and clean up after the job is done. If there is ever a need for a call-back due to a minor item, they are prompt to respond and courteous. Their charges are reasonable for the amount of time and marerials they use. I will continue to use them in the future due to consistently great service. I will also recommend them to my friends."
New boiler install
Response time2 days
1 neighbors recently requested a quote
Recommended by100%of homeowners
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FAQs for air conditioning projects in Portland, 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 Portland, CT homeowners’ guide to air conditioning services

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