Serving Greenland, NH and surrounding areas
Approved
Super Service Award Winner
In business since 1932
Free estimates
Emergency services offered
"Always happy with the service. I recently had my thermostat upgraded by Jason S. In service, and couldn’t be more happier with his expertise, and dedication!"
+11
Serving Greenland, NH and surrounding areas
Approved
In business since 2000
Free estimates
Warranties offered
"Kevin was great. Our Central Air System died during a Heat Wave . When other companies told us they couldnâ t give us an appointment for two weeks, Kevin came the next morning and on a Holiday weekend. He was quick and reasonably priced. We would highly recommend Kevin Russo to anyone looking."
+2
Serving Greenland, NH and surrounding areas
Approved
In business since 2008
Credit card accepted
Offers commercial services
"Patrick called Friday night and showed up at 7:15 AM on a Saturday morning (OMG) to repair a central A/C system that was icing up inside. I'm still waiting to hear from the other 2 companies that were listed in my area. I know they will call Monday which would mean myself and my disabled wife would spend a very uncomfortable weekend and probably longer because most HVAC companies don't work weekends and it usually takes at least a day to schedule an appointment. Not fun when the humidity is 65% and the temp is close to 80. Patrick did a great job, A/C is running like new. Will hire him again and recommend him in a heart beat. Prices are very reasonable. Hire him!"
+18
Serving Greenland, NH and surrounding areas
Approved
In business since 2003
Free estimates
Emergency services offered
"all went well, just needed cleaning up here and there. seems to work better now. i do have a question on the bill(i'll be invoiced later), perhaps i read the codes wrong. looks like a motor was changed, it wasn't as far as i know, but it probably meant checked out.i'll question that on the bill when i get it."
+19
Serving Greenland, NH and surrounding areas
Approved
In business since 2015
Free estimates
Credit card accepted
"The water pump for my over 16 year old central air conditioner stopped working and, as a result, I discovered water in my basement. I searched Home Advisor for a company to fix the problemand selected NSHEC based on customer reviews. I was able to schedule a service call online for that afternoon, then had a few questions about the issue and repair that I wanted answered before having them come out. I called and left a message, they returned my call within minutes, discussed my issue, explained what the possible issue was, how long it would take to fix it as well as the estimated cost of the repair. The technician, I believe his name is Jake, arrived on time and had the part on his truck. He quickly made the repair, explained what he did and that it is common for the these pumps to eventually stop working. If that should happen again in the future, the new pump was wired to shut down the ac and getting water in the basement would now be averted. The final cost was a few dollars more than the phone estimate, service was very prompt, the technician knowledgeable, quick, very pleasant and answered all of my questions before and after the repair. I wouldn't hesitate to call NSHEC again should another issue arise in the future."
+14
Serving Greenland, NH and surrounding areas
Approved
Super Service Award Winner
In business since 2019
Free estimates
Small jobs welcome
"Eric did a fantastic job installing our new bathroom fan. He was courteous, honest, and clearly knows his trade. The fan is quiet and works beautifully. It’s such a relief to find someone reliable and skilled. We will definitely use Angell Electrical again! Highly recommend."
Serving Greenland, NH and surrounding areas
Approved
Super Service Award Winner
In business since 2012
Free estimates
Credit card accepted
"I had Arete Electric provide an interior and exterior upgrade and couldn’t have been more pleased with the service and quality of their work. I highly recommend them to anyone looking for a job done right."
Serving Greenland, NH and surrounding areas
Approved
In business since 2023
Free estimates
Credit card accepted
We are a locally owned and operated company that values honesty and integrity and treats your home as if it were our own. We offer a variety of Heating and Cooling services that are customizable to each individual project. You will find us to be competitively priced, paying close attention to the details of each and every project that we are involved with. We look forward to building lasting relationships and guarantee your satisfaction!
Serving Greenland, NH and surrounding areas
Approved
In business since 2000
Customers say: Quick response
Our mission at Olson Heating & Cooling is to continue the growth of our business by doing right by all of our clients. We love seeing that one of a kind smile on a home owners face at the end of a project! Company Name stacks up with the competition and surpasses it with competitive prices, second to none workmanship and a prompt/responsive team! We give you quality that you can measure, and a finished product that will enhance your home forever. Call us today!\n
Serving Greenland, NH and surrounding areas
Approved (Corporate)
In business since 1988
Emergency services offered
Warranties offered
"They replaced my furnace and put in central air. They took the time to ask where I wanted things put. They showed up on time and when they left everting was clean exelant job"
+24
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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