
Serving North Truro, MA and surrounding areas
Approved
In business since 2006
Free estimates
Credit card accepted
"Responded quickly and explained clearly what he could do and when. Would recommend him. Did a great job"


Serving North Truro, MA and surrounding areas
Approved
In business since 2006
Free estimates
Credit card accepted
"Responded quickly and explained clearly what he could do and when. Would recommend him. Did a great job"

Serving North Truro, MA and surrounding areas
Approved
In business since 2009
Free estimates
Emergency services offered
"Good Service, on time, reasonably priced, professional."
Serving North Truro, MA and surrounding areas
Approved
In business since 2006
Free estimates
Warranties offered
Hoctor Built Homes has a single mission: Complete Customer Satisfaction and one call does it all services from landscaping to New Home construction. We pride ourselves in being the experts in the industry. Call us for a free quote today!

Serving North Truro, MA and surrounding areas
Approved
In business since 2021
Free estimates
Warranties offered
Family owned business with over 12 years of experience handling all your Heating & AC needs for residential and commercial. Master certified HVAC.

Serving North Truro, MA and surrounding areas
Approved
In business since 2023
Free estimates
Emergency services offered
"Service was completed in a cost effective and timely manner. The communication, estimate, and finally installation were exceptional. Delighted to recommend."

Serving North Truro, MA and surrounding areas
Approved
In business since 2005
Free estimates
Emergency services offered
"Tatra has done a ton of work for me at multiple homes. * Install central AC * Replace boilers * Install appliances (in difficult old construction) * Create an outdoor shower and stone deck complex * Fix every little plumbing thing that goes wrong in an old house * Roof gutters and yard drainage improvement These are the one-stop shopping folks to call! And everyone who works there is so friendly, polite, and neat with their work. Always my first (and only) call."





+54
Serving North Truro, MA and surrounding areas
Approved
Free estimates
Small jobs welcome
Hello. With 16 years in the HVAC business, I recently decided to start my own company! Well experienced in all things pertaining to mechanical system’s of all kinds. From service, to replacements, to new installs we’ve got you covered! Licensed and insured.

Serving North Truro, MA and surrounding areas
Approved
Free estimates
Warranties offered
Small jobs welcome
We take great pride in our experience, expertise, quality, and customer service that we provide to meet the consumer's needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety, and quality, regardless of how large or small the job. Call us today.

Serving North Truro, MA and surrounding areas
In business since 1998
Free estimates
Warranties offered
"The owner of the company gave me a call and came out for the job appraisal on the same day. I received the appraisal that evening. He was there two days later and the complete install was done in two days and it works great. About the owner and his crew, they were great, polite, kept the work area clean and completed the central A/C in two days with quality equipment at a very reasonable price. They followed up a couple days after the work was completed to follow up and make sure everything was functioning properly. We are very pleased with this transaction and would recommend Subzero Heating & Air Conditioning to friends and family."





+29

Serving North Truro, MA and surrounding areas
In business since 2024
Free estimates
Warranties offered
"One of the best hvac technicians I’ve ever have come out to look at my air conditioning. I had three other people come out and they couldn’t figure it out. Within ten minutes Dave had our ac working again. Thank you"


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

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