
Serving Black Diamond, WA and surrounding areas
Approved
In business since 1984
Free estimates
Emergency services offered
"Great. Staff is knowledgeable. Pleasant to deal with. Gave us a great price on our furnace."





+53


Serving Black Diamond, WA and surrounding areas
Approved
In business since 1984
Free estimates
Emergency services offered
"Great. Staff is knowledgeable. Pleasant to deal with. Gave us a great price on our furnace."





+53

Serving Black Diamond, WA and surrounding areas
Approved
In business since 2021
Free estimates
Warranties offered
"My furnace broke down, got same day appointment to diagnose. Ended up replacing the 27yo furnace with energy efficiency with AC add-on 4 days later. The installation took the whole day but went well."

Serving Black Diamond, WA and surrounding areas
Approved
In business since 2008
Free estimates
Emergency services offered
"Our furnace failed on a Saturday morning. cummings was the only company that returned our call, Lance came out on Sunday to estimate the job, we accepted and the new furnace and water heater were installed on Monday. We were given detailed instructions on programming the new thermostat, the workers were polite and friendly and cleaned up thoroughly."





+1

Serving Black Diamond, WA and surrounding areas
Approved (Corporate)
In business since 2012
Free estimates
Emergency services offered
"Technician was knowledgeable, explained all my options and provided best choices for my circumstances. Provided additional recommendations regarding the condition of my heat pump/furnace and what needed to be done in the future."





+9

Serving Black Diamond, WA and surrounding areas
Approved (Corporate)
In business since 1993
Free estimates
Emergency services offered
"The Technician came to do maintenance on both our furnace and heat pump. He was thorough and knowledgeable and explained everything and took several pictures. His name was Virgil and he was very detailed and cleaned up afterwards. He is the best technician we've had to do our system. We would definitely recommend him and his company. In fact, we would like him to come back to do our next service. I really can't say enough about Virgil and his company, Black Hills, Inc. They are the BEST! Thank you, Paul and Kristine Thompson"





+12

Serving Black Diamond, WA and surrounding areas
Approved
In business since 1990
Free estimates
Warranties offered
"Jane's replaced my 20-year old Munchkin boiler with a super efficient, modern Rinnai. Everyone was a joy to deal with. Service was excellent. Darian, who scheduled and arranged the replacement, and Greg and Oscar (who did the work) were fantastic. Excellent service, especially since I live on Lopez Island, which is not easy to get to. Competent, good-natured, hard-working, nice folks."



Serving Black Diamond, WA and surrounding areas
Approved
In business since 2016
Free estimates
Small jobs welcome
"They worked with me to determine a very reasonable solution to a difficult water / heating problem I had in my crawlspace. They replaced all the flex heating ducts and insulated all of the rigid ductwork making routing updates to help ensure they all stayed dry in the future. Their estimate was fair and accurate, they completed the work on time and the quality of the work was excellent. All of the workers were very professional and respectful and they ensured that I was completely satisfied at the end."





+16

Serving Black Diamond, WA and surrounding areas
Approved
In business since 2023
Emergency services offered
Warranties offered
"The Good: our furnace failed. They showed up that day and fixed it that day. Not So Good: I gave them the make, model, and serial number of the furnace, and the error code coming off the system board that pointed to a specific part. They showed up without that part. To be fair, they were already in the field so they get a free pass on that. Troubleshooting was brief and the part was right on the front of the furnace. Couple screws and a few wire disconnects so the actual replacement time was minutes. The part costs about $50. The total bill was $621. I paid for a journeyman and an apprentice who did not do anything so he did not learn and I got dinged a bit much in the pricing. The bill had zero detail. Just the part and the price."





+6

Serving Black Diamond, WA and surrounding areas
Approved
In business since 2017
Free estimates
Emergency services offered
"Without reading any further into my personal experience, I would and have recommend(ed) Northwest Expert Heating to anyone needing HVAC services. Eddie, his dad and brother are great guys, knowledgeable, easy going and respectful. Company * Competitively priced * Family owned, operated - father and sons own and install * Salesperson has interesting approach and a bit unique, but he was great about being able to work within my budget and come up with best solution for us, responsive with questions and concerns * Sell different brands. Some companies are limited to one brand i.e Daikon, Mitsubishi etc. and push the one they have My house * 1920â s, 2 levels and basement (3 total levels) * originally with gas furnace in basement, ducted throughout New System * Daikin Heat pump,1 wall unit in living room,1 wall unit basement, 1 ducted attic unit for top floor to bathroom, 2 bedrooms Good- * each level can turn on off and regulate tempurature * Able to remove my furnace and make more room in my basement * We now have AC ð * Wall units are pretty decent at the â Automaticâ setting for the fan and temperature regulation Could be better (not bad) - * The temperature guage for the ducted unit is in the hallway(as most systems probably are) where you use the remote to operate, issue is the temp in the rooms could be colder/hotter than the hallway, so we end up having to keep the doors open to regulate(also the air return is there so it needs to do itâ s thing) * Obviously the wall unit in the living room may not be the best to look at, I did get the best looking one by Daikon though and dont mind it, but it does actually â blowâ the air, so we are unable to put any plants in the pathway of the air movement because it heats it up too much in winter, it makes a blowing noise like any fan would (ducted systems dont make any fan sound obviously) * Heat out of wall units are not burning hot like a furnace * basement bedroom doesnt get that much heat from the wall unit, but I when deciding on system and accepted this sacrifice, better than nothing Installation process * Good: * The guys were great, dad and son came for installation * quiet, efficient, cleaned up * Few issues all communicated and taken care of timely * Tricky tight space outside to install the heat pump and they worked with me through it and it passed. * Issues: * Inspection - only problem with the attic unit not being lifted off the â floorâ giving enough space for servicing, they fixed * Intallation - One issue that was not so understanding nor happy with was that when they had ran the connections from the wall unit in the living room to the Heat Pump and drilled a HUGE 4" hole in my floor joist, more than half the width. But, it appeared this large of a hole was not needed to run through the joists as the same connections were run through the exterior of the house to the heat pump with a much smaller hole. Follow Up Service * There has been a couple small â emergenciesâ * I had some electrical done, which clogged the return filter of plaster dust and made the system start leaking water on my ceiling. I guess this might not have been a problem if there was not a clog, but it did raise a flag to the unit being slightly tilted and uneven and making the overflow redirect away from proper overflow draining tubes. * Not their fault at all, I started noticing leaking on my exterior wall and thought it was the condensation from my wall unit in living room. They were able to come out right away and fix. The problem turned out that my basement contractor had cut and removed the condensation tube that led to outside so it was just dripping within my walls. Overall, these guys are great, and with expensive investments like your HVAC system, itâ s nice to know that their team stands behind their work and products and are there..."





+22

Serving Black Diamond, WA and surrounding areas
Approved
In business since 2006
Free estimates
Emergency services offered
"These guys were amazing from dispatch to install and follow up! Super professional, very personable, and super knowledgeable. They did a fantastic job! didn’t leave until they cleaned everything spotless! They went over our new system with us and answered all our questions. I am so grateful to have finally had a great experience with house repair!"




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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