
Serving Jarrettsville, MD and surrounding areas
Approved
In business since 2009
Free estimates
Credit card accepted
"They did a wonderful job for me when I needed the coil on my AC unit replaced. On time, Neat and tidy. Good work."





+8


Serving Jarrettsville, MD and surrounding areas
Approved
In business since 2009
Free estimates
Credit card accepted
"They did a wonderful job for me when I needed the coil on my AC unit replaced. On time, Neat and tidy. Good work."





+8

Serving Jarrettsville, MD and surrounding areas
Approved
In business since 1988
Free estimates
Emergency services offered
"My experience with Deanâ s HVAC was great! Iâ m still so happy. It will be two years in October since I had the entire system replaced. I went from an oil furnace to a heat pump. Also needed a brand new AC unit. The price was very affordable and the company followed up with me as promised for the AC unit when it was time to start that rolling. Very professional and did a superb job. Very neat and clean. Itâ s one of the best investments I made for my home."

Serving Jarrettsville, MD and surrounding areas
Approved
In business since 2013
Free estimates
Warranties offered
"Prompt response and completed installing both the AC and heating systems in the same day. Answered all questions I had. Project was the best price I could find also. I'm very pleased with the job they did."

Serving Jarrettsville, MD and surrounding areas
Approved (Corporate)
In business since 1945
Free estimates
Emergency services offered
"I had a high efficacy heat pump system installed by ARS 11/2 ago. I am used to gas furnace so understanding how heat pump works is an education. The mechanic was very patient in explaining how it works and what to look for if there is an issue. Of course this cold season a got an high unexpected bill from the electric company and was baffled because of the amount I spent on this high efficiency unit. They came out looked at and found no issue. They explained this was a very unusual cold season and the unit performed accordingly for sub freezing condition. They did leave a card and said if I see anytjing that look unusual please give them a call asap. The mechanic was very knowledgeable."


Serving Jarrettsville, MD and surrounding areas
Approved
In business since 2013
Free estimates
Emergency services offered
"They had the system I needed and recommended a full furnace replacement as well and explained why! We are very happy with our new system!"





+1

Serving Jarrettsville, MD and surrounding areas
Approved
In business since 2001
Free estimates
Credit card accepted
"We had a couple of scheduling delays but everything was resolved. Jason worked so hard on resolving the delays and kept us in the communication loop. The technicians, Steve and Brandon, that installed the heat pump were incredible. They worked together like clockwork. It is a beautiful installation and is working beautifully."





+18
Serving Jarrettsville, MD and surrounding areas
Approved
In business since 1982
Warranties offered
Credit card accepted
"Reliable, dependable and easy to work with."





+6

Serving Jarrettsville, MD and surrounding areas
Approved (Corporate)
In business since 1982
Free estimates
Emergency services offered
"We decided to replace our 16 year old AC and furnace as we wanted to prevent possible problems with our HVAC system. The heating consultant that they sent, Alex H, was very friendly and knowledgeable. He provided us with estimates for a number of options - similar to those from other HVAC companies that quoted for this work. A day later I received a call from Blue Dot offering a discount on that quote and we accepted that quote. Alex made the one and a half hour drive to visit with us again, to walk us through the contract details, and to explain install process. This was a really nice touch as usually contracts are signed electronically these days. The Blue Dot install team came on time on the scheduled day and did a neat and professional job with the install - performing all the necessary checks and tests, and left the work area clean and tidy - and with the HVAC systems working well. The whole purchase and install process couldn't have gone smoother. We are very happy with BlueDot and will certainly use them again preferentially for our HVAC needs."


Serving Jarrettsville, MD and surrounding areas
Approved
In business since 2000
Free estimates
Credit card accepted
"Great service all around! I needed a full swap, both a/c and furnace. They were great right from scheduling! They worked with me on financing which was a blessing. You can tell they care about the quality of their work and went above and beyond in every way!"

Serving Jarrettsville, MD and surrounding areas
Approved
Super Service Award Winner
In business since 1999
Free estimates
Emergency services offered
"Sunday 6/22 my mom's air conditioner was struggling. We called Aireserv who set up for their tech Bryson Bean to come out to mom's house. From the bright greeting smile as he introduced himself to the going over everything he was very professional and patient with all my questions. Highly recommend Aireserv for any of your heating and air conditioning issues. Thank you Bryson for being so you and personable."





+130
Converting from an oil furnace to an electric furnace isn't a simple swap—the oil system needs to be completely removed before installing the electric furnace. You'll need a full electric system installation, but you might be able to reuse existing ductwork if it's up to current safety standards. You’ll need to budget for a new electric furnace installation, which costs between $1,800 and $6,200, including professional removal, proper disposal, and safe installation of the new system.
Electric furnaces are 100% efficient at converting electricity into heat. However, some of that heat can be lost as it travels through your home's ductwork or escapes through poorly insulated areas. That's why regular duct maintenance and proper home insulation are important to maximize your furnace's efficiency and reduce heat loss, ensuring consistent warmth and lower energy costs.
With proper maintenance, an electric furnace can last anywhere from 20 to 30 years, outlasting the average gas furnace's lifespan of 15 to 20 years. To keep your electric furnace running efficiently, schedule regular cleanings, tighten connections, and have inspections done before winter arrives. With routine maintenance, you’ll ensure consistent, safe heating for years to come.
The size of the electric furnace you need depends on factors like your home's square footage, climate, and insulation quality. As a general guideline, those who live in warmer climates should multiply their square footage by 30 to 35 BTUs, while those in cooler areas should multiply it by 50 to 60 BTUs.
Consulting with an HVAC professional can help you determine the exact size that's right for your home.
An electric furnace works by converting electricity into heat using high-resistance heating elements. A blower then pushes the warm air through your home's ductwork, distributing heat evenly throughout your space. Since there's no combustion involved, electric furnaces eliminate the risks associated with gas furnaces and provide consistent, reliable heating when properly installed.
An electric furnace uses between 40 and 80 kilowatts per day to heat your home. The exact amount it uses depends on factors like your home's size, insulation, and overall energy requirements. Larger homes or those with poor insulation use more energy than smaller, well-insulated spaces. A professional furnace assessment can help confirm the ideal unit size for your needs.
From average costs to expert advice, get all the answers you need to get your job done.

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