Serving Dover, PA and surrounding areas
Approved
In business since 1988
Free estimates
Emergency services offered
"Mike did a fantastic job of installing our furnace and air conditioning units. Highly recommend Mike"
Serving Dover, PA and surrounding areas
Approved
Super Service Award Winner
In business since 2002
Free estimates
Emergency services offered
"They are prefect! Lifetime heating and air conditioning company."
+47
Serving Dover, PA and surrounding areas
Approved
Super Service Award Winner
In business since 1959
Free estimates
Emergency services offered
"The technician Adam couldn't have been more professional and helpful. He arrived on time and was very courteous. He quickly was able to assess the problem and repair it. I'd recommend One Hour Heating and Air Conditioning to anyone looking to install or repair their HVAC system."
+16
Serving Dover, PA and surrounding areas
Approved
Super Service Award Winner
In business since 2024
Free estimates
Warranties offered
"Jay did great work, promptly, and taught me much about my older home's plumbing and HVAC systems. Installed new main service cut off valve, plus several other interior cut off valves for water lines to our two bathrooms, toilets and outside water spigot. All up-to-date and super easy to turn on/off. Plus, installed new Hot and Cold valves for tub in main bathroom that go with older style of tile and shower b/c originals had worn out and were leaking. Great to have this tub and shower available again for use! Did the work i requested, no pressure to upsell, but made some great suggestions for improvements at much better price than competition. Definitely will hire again and recommend highly. Thanks. -steve s. York PA"
+1
Serving Dover, PA and surrounding areas
Approved
In business since 2016
Free estimates
Emergency services offered
"Working with Connelly Heating and Air Conditioning was a terrific experience. My mother had her furnace crack and become disabled right before the week of Christmas. Shannon was terrific to work with both on understanding that in the middle of December she could not go without heat, and that funds were limited. He took the time to find us a great replacement and even installed on the weekend to prevent my mother from having to stay in the cold for more than a day. Installation was incredibly quick and done well within our budget. I would recommend Connelly Heat and Air Conditioning to everyone as Shannon is terrific to work with and is there to help. Well worth more than 5 stars and will be the only person I call whenever I have issues with Heating or Air Conditioning."
+2
Serving Dover, PA and surrounding areas
Approved
In business since 2004
Free estimates
Emergency services offered
"I would highly recommend Prime Home HVAC. Our air conditioner was out for an entire weekend. I called Nathan on Monday, by Tuesday we had relief!! Nathan and his staff were professional and paid attention to detail. The price was fair and they made it easy. I love that they are a family-owned business. You will not be disappointed."
+3
Serving Dover, PA and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"Not only did they replace my old oil system with a heat pump, they replaced my entire AC system as well. Much more efficient, included new thermostats which are operated via mobile devices, and gave me peace of mind. Recommended an appropriate heating and AC system, replaced everything and did it in an efficient manner. Much more reasonably priced than all other quotes, prompt service & quick completion of the task. Didn't try to talk over my head about things that I wouldn't understand, explained it clearly and effectively. Highly recommend to anyone needing any type of heating or cooling repairs or replacements."
+15
Serving Dover, PA and surrounding areas
Approved (Corporate)
In business since 1946
Free estimates
Emergency services offered
"Great experience Justin, Nate & Timothy were awesome. Very knowledgeable, professional & curious. Aside from the cleanliness they delivered an experience. I highly recommend HL bowman if you want rapid service on your HVAC. Pricing was reasonable in my opinion & financing is an option. Keep in mind when seeking quotes for your HVAC repair/ new install you must consider performance over equipment, that is if your want a good system that will have a good run/life span."
+6
Serving Dover, PA and surrounding areas
Approved (Corporate)
In business since 1903
Emergency services offered
Warranties offered
"very efficient and friendly service.
"
Serving Dover, PA and surrounding areas
Approved
In business since 2004
Customers say: Quality work
"My husband and I used Freedom Comfort for new Central Air unit and furnace. Brian did great job and completed work in timely manner. Larry was thorough in breaking down different systems and performance. We are waiting to hear back to schedule another service with them."
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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