
Serving Holland, MA and surrounding areas
Approved
In business since 2017
Free estimates
Customers say: Quality work
"Derek was excellent! Very professional and courteous. He arrived on time and we love our new thermostat."


Serving Holland, MA and surrounding areas
Approved
In business since 2017
Free estimates
Customers say: Quality work
"Derek was excellent! Very professional and courteous. He arrived on time and we love our new thermostat."
Serving Holland, MA and surrounding areas
Approved
In business since 2021
Free estimates
Customers say: Quick response
"Very fast service - had air conditioning condenser not working on a 90F day - he called - showed up within an hour, fixed within an hour! Very happy!"

Serving Holland, MA and surrounding areas
Approved
In business since 1960
Free estimates
Emergency services offered
"Very expensive project having my Central Air and Furnace go out at the same time. We had a new furnace installed last week and we were not satisfied with how it was working. I called Hurley and David and had a technician come out, it was determined we needed a bigger BTU furnace. I spoke to Michelle Creek who ensured me they would order a new one and have it installed. They ordered it on 6/10 and it was installed today 6/12. Jimarri Scott came to install with his crew and he was awesome!!! Very knowledgeable, polite and professional. He explained all the steps to me, kept me updated with the progress! Hopefully no more issues going forward! Thank you!"




Serving Holland, MA and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Warranties offered
"I had an excellent experience with Stephanie, Tim, and Spencer during the installation of my mini split system. From the very beginning, they were professional, friendly and communicative. They took the time to explain how the installation process would work and made sure I understood all the benefits of swtiching to the system. I felt well informed and supported. Since the installation, the system has made a huge difference in my hosuehold. The units are quiet, efficient, and give me the ability to control the temperature in all rooms in my household. Not only does it keep the space comftorable by replacing AC's but I've noticed the air quality and drop in my electricity bills are better. I"m grateful for the work this team did and would recommend them toothers. I trust them completely and wouldn't hesitate to use them in the future again. Thank you!"



Serving Holland, MA and surrounding areas
Approved (Corporate)
In business since 2018
Free estimates
Emergency services offered
"Reasonable price, job done as scheduled. Highly recommended!!!"





+19
Serving Holland, MA 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!





+10
Serving Holland, MA and surrounding areas
In business since 1989
Free estimates
Emergency services offered
"Last April I purchased a brand new condominium. There was quite a bit of construction dust as well as some construction debris in the air ducts once the building was completed. I finally decided to hire Dustbusters Duct Cleaning this month to clean them out. The dryer vent was also cleaned and the central AC coil was inspected. Jeremy was the technician who performed the job. He was punctual, polite and courteous, and very knowledgeable. Jeremy explained the entire process to me and showed me before and after pictures of the air ducts. I have noticed that the air flow from my heating system seems stronger now which indicates to me that cleaning the air ducts has improved the efficiency of my heating system. I would definitely hire this company again. Cheryl B."

Serving Holland, MA and surrounding areas
In business since 2004
Free estimates
Emergency services offered
"The guys were on time, cheerful, thorough, and and got the job done. They were thoughtful about my cat, too. The 'sanitization' stuff they sprayed did smell for a few days, despite my airing out the house with the windows open, but it did eventually go away. And they must have gotten a lot of dust out because my children (who are usually very sneezy with the dust pumping through our house) have seemed much better since the ducts got cleaned. Very happy with the service. I used an Angie's List "deal" for the service--I was in a hurry to get it done (my kids had dropped some art supplies down a vent that were making clicking noised that were driving me nuts) so I didn't compare prices at all, I just looked for a company that seemed thorough and they they were. And the clicking sounds of rogue art supplies is gone. Yay!"





+43

Serving Holland, MA and surrounding areas
In business since 2001
Free estimates
Warranties offered
"The service was excellent. They were prompt, responsive and efficient. Three guys came out and they were done within a day so that we won't lose heat. I would highly recommend them."



Serving Holland, MA and surrounding areas
In business since 2020
Free estimates
Warranties offered
"He was very professional and came out in a timely manner. He did a thorough inspection and took time to explain the problem with my unit. He also follows up to make sure everything is going well. I would recommend N.A. Heating and cooling to anyone that needs a good heating/air repair or replacement done."
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.
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