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    Average homeowner rating
  • Verified reviews icon529
    Verified heating oil services reviews

Find Heating oil pros in Mercer Island

Avatar for Innovation HVAC, LLC

Innovation HVAC, LLC

5.00(
3
)
Approved Pro

Innovation HVAC, LLC

5.00(
3
)
Approved Pro
2 years of experience
Free onsite estimate

At Innovation-HVAC, we believe in providing our customers with honest and thorough evaluations of their heating and cooling systems. We offer affordable hvac services. Here’s how our approach can help you save money Efficiency Analysis: We assess the efficiency of your current system and suggest improvements or replacements if necessary. An efficient HVAC system consumes less energy, leading to lower utility bills. Preventive Maintenance: Regular maintenance can prevent costly repairs and extend the lifespan of your system. We provide routine check-ups to ensure your system is running smoothly. Optimal System Design: If a new installation is needed, we design the system to meet your specific needs. This avoids overspending on unnecessary capacity. you can call 24/7 206-503-6055

"Innovation HVAC did an absolutely amazing job replacing my heat pump. What I loved most was how communicative they are. When I received my quote it didn?t seem like I was getting upsold and charged more than I needed to be compared to other companies. I highly recommend them to everyone and I will be hiring them again for any future project"

Ashley A on February 2025

At Innovation-HVAC, we believe in providing our customers with honest and thorough evaluations of their heating and cooling systems. We offer affordable hvac services. Here’s how our approach can help you save money Efficiency Analysis: We assess the efficiency of your current system and suggest improvements or replacements if necessary. An efficient HVAC system consumes less energy, leading to lower utility bills. Preventive Maintenance: Regular maintenance can prevent costly repairs and extend the lifespan of your system. We provide routine check-ups to ensure your system is running smoothly. Optimal System Design: If a new installation is needed, we design the system to meet your specific needs. This avoids overspending on unnecessary capacity. you can call 24/7 206-503-6055

"Innovation HVAC did an absolutely amazing job replacing my heat pump. What I loved most was how communicative they are. When I received my quote it didn?t seem like I was getting upsold and charged more than I needed to be compared to other companies. I highly recommend them to everyone and I will be hiring them again for any future project"

Ashley A on February 2025


Avatar for Airpros Energy

Airpros Energy

4.84(
80
)
Approved Pro

Airpros Energy

4.84(
80
)
Approved Pro
Customers say: Super punctual
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
19 local quotes requested

Our team of experienced HVAC Seattle workers can handle any job, no matter how big or small. Need a new gas furnace to meet your Seattle heating needs? We’ve got you covered. Looking for Bellevue air conditioning? Not a problem. It doesn’t matter if you live in a small apartment that needs a new HEPA filter or a large business with a long list of Seattle or Bellevue heating and air conditioning needs. Just give us a call, and we’ll be happy to help.

"I won't call any other heating or AC experts ever again. Twice now, I've had incomparable experiences. I had another highly reputed company come diagnose my failed furnace and provide an estimate, but AirPros' price for the same part and repair was much more reasonable and furnace repairs are not cheap, so the difference mattered significantly. AirPros also treated me like family. Go with this family business, you will be happy."

Trudy B on March 2020

Our team of experienced HVAC Seattle workers can handle any job, no matter how big or small. Need a new gas furnace to meet your Seattle heating needs? We’ve got you covered. Looking for Bellevue air conditioning? Not a problem. It doesn’t matter if you live in a small apartment that needs a new HEPA filter or a large business with a long list of Seattle or Bellevue heating and air conditioning needs. Just give us a call, and we’ll be happy to help.

"I won't call any other heating or AC experts ever again. Twice now, I've had incomparable experiences. I had another highly reputed company come diagnose my failed furnace and provide an estimate, but AirPros' price for the same part and repair was much more reasonable and furnace repairs are not cheap, so the difference mattered significantly. AirPros also treated me like family. Go with this family business, you will be happy."

Trudy B on March 2020


Avatar for Product Air Heating & Cooling, LLC 

Product Air Heating & Cooling, LLC 

4.86(
269
)
Approved Pro

Product Air Heating & Cooling, LLC 

4.86(
269
)
Approved Pro
Customers say: True professional
Recommended by 91% of Angi customers
Recommended by 91% of HomeAdvisor customers
278 local quotes requested

Product Air: your dedicated partner for complete home comfort. Proudly serving Marysville, Everett, Seattle, Bellevue, and surrounding communities, we deliver expert heating, cooling, and electrical services designed to exceed your expectations. From furnace repairs to electrical solutions and optimizing heat pump performance, we're equipped to handle any home service need. Trust Product Air for seamless solutions that keep your home running smoothly and efficiently, season after season.

"Kevon was great! Knowledgable and made suggestions for placements of outlets that have been so convenient. I strongly recommend product heating and air electric company. Love that they service Monroe WA"

Tami L on October 2025

Product Air: your dedicated partner for complete home comfort. Proudly serving Marysville, Everett, Seattle, Bellevue, and surrounding communities, we deliver expert heating, cooling, and electrical services designed to exceed your expectations. From furnace repairs to electrical solutions and optimizing heat pump performance, we're equipped to handle any home service need. Trust Product Air for seamless solutions that keep your home running smoothly and efficiently, season after season.

"Kevon was great! Knowledgable and made suggestions for placements of outlets that have been so convenient. I strongly recommend product heating and air electric company. Love that they service Monroe WA"

Tami L on October 2025


Avatar for Smart Electric, Heating & Air

Smart Electric, Heating & Air

4.93(
61
)
Approved Pro

Smart Electric, Heating & Air

4.93(
61
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
315 local quotes requested

We are a family-owned and operated business dedicated to the highest standards of workmanship, safety, and customer service. We specialize in home remodels, new construction, knob-and-tube rewires, smart home automation, generator installation, as well as general home electrical needs. We have extensive experience in helping our customers design home electrical layouts and features to best meet their needs and budgets. No job is too big or small for our team - we just love what we do!

"This is hands down the only electrical/hvac company you need in your phone. Easiest, most efficient owner and teams you will find in the Seattle area hands down. Been working with these guys for 7 years, each project we tackle is actually fun because they make it so easy!"

Jordan R on February 2025

We are a family-owned and operated business dedicated to the highest standards of workmanship, safety, and customer service. We specialize in home remodels, new construction, knob-and-tube rewires, smart home automation, generator installation, as well as general home electrical needs. We have extensive experience in helping our customers design home electrical layouts and features to best meet their needs and budgets. No job is too big or small for our team - we just love what we do!

"This is hands down the only electrical/hvac company you need in your phone. Easiest, most efficient owner and teams you will find in the Seattle area hands down. Been working with these guys for 7 years, each project we tackle is actually fun because they make it so easy!"

Jordan R on February 2025


Avatar for Washington Energy Services

Washington Energy Services

4.73(
836
)
Approved Pro

Washington Energy Services

4.73(
836
)
Approved Pro
Customers say: Super punctual
Recommended by 92% of Angi customers
Recommended by 92% of HomeAdvisor customers
316 local quotes requested

Washington Energy Services has been helping homeowners throughout Western Washington save money and live more comfortably since 1957. As one of the largest home improvement companies in the Seattle-Tacoma area, we are able to provide you with top-quality products and services, installed by our professional craftsmen. Our free in-home estimates ensure you get the right product for your home. We'll be with you through all aspects of your project from the purchase decision, expert installation, quality maintenance and service, and even warranty work should you need it. We assist with permits and rebates, too. Give Washington Energy Services a call today to learn more or to schedule your service.

"This review is long overdue in my praise of Washington Energy Services for their customer service, pricing and workmanship ! My first interaction was in 1999 when they installed windows throughout my house. They are still in excellent condition. I might note I called them over 20 years later to inquire on how I could repair a broken slider and they sent someone right out, charging a very nominal amount to repair it. In 2020, I needed to replace my hot water tank, and the extremely knowledgeable Christy presented several options, answering my many questions. I settled on one with a booster that seemed to best fit my needs. Finally, in December 2023, I purchased a new gas furnace from WES. I had a minor issue with a fan switch and they responded quickly to rectify the situation. Within the past two months, I seemed to be having an issue with my thermostat (something they had not installed), and the manager, Greg, came out twice with his crew to explore the problem. Today they installed a new thermostat FREE OF CHARGE! Their excellent response and customer service is beyond any company I have hired. And I particularly love that they are family owned and have been around for decades. Their employees seem to be there for the long haul, which speaks highly of the owner. I refer all my friends and family and I won't go anywhere else for services that they offer. Many thanks to the staff I have interacted with over the past 25 years!"

Joan K on March 2025

Washington Energy Services has been helping homeowners throughout Western Washington save money and live more comfortably since 1957. As one of the largest home improvement companies in the Seattle-Tacoma area, we are able to provide you with top-quality products and services, installed by our professional craftsmen. Our free in-home estimates ensure you get the right product for your home. We'll be with you through all aspects of your project from the purchase decision, expert installation, quality maintenance and service, and even warranty work should you need it. We assist with permits and rebates, too. Give Washington Energy Services a call today to learn more or to schedule your service.

"This review is long overdue in my praise of Washington Energy Services for their customer service, pricing and workmanship ! My first interaction was in 1999 when they installed windows throughout my house. They are still in excellent condition. I might note I called them over 20 years later to inquire on how I could repair a broken slider and they sent someone right out, charging a very nominal amount to repair it. In 2020, I needed to replace my hot water tank, and the extremely knowledgeable Christy presented several options, answering my many questions. I settled on one with a booster that seemed to best fit my needs. Finally, in December 2023, I purchased a new gas furnace from WES. I had a minor issue with a fan switch and they responded quickly to rectify the situation. Within the past two months, I seemed to be having an issue with my thermostat (something they had not installed), and the manager, Greg, came out twice with his crew to explore the problem. Today they installed a new thermostat FREE OF CHARGE! Their excellent response and customer service is beyond any company I have hired. And I particularly love that they are family owned and have been around for decades. Their employees seem to be there for the long haul, which speaks highly of the owner. I refer all my friends and family and I won't go anywhere else for services that they offer. Many thanks to the staff I have interacted with over the past 25 years!"

Joan K on March 2025


Avatar for Ares Comfort Systems

Ares Comfort Systems

4.88(
8
)
Approved Pro

Ares Comfort Systems

4.88(
8
)
Approved Pro
Customers say: Quality work
285 local quotes requested
1 years of experience

Ares Comfort Systems is a local owned and operated small business. We are focused on residential Heating and Cooling in the Greater Puget Sound Area. As a collection of friends and family who started this company we believe in doing what’s best for our clients not what’s best for us. We believe everyone should feel comfortable in their own home. After all “We fight for your comfort”!

"These guys are amazing 👏. They accomodated an emergency request for a new furnace and heatpump system, pricing was not only competitive, but frankly a better deal overall. They were communicative, punctual, thorough, friendly, and I wish I had hired them the first round for our other home. Glad we found them!"

Tammy _ on October 2025

Ares Comfort Systems is a local owned and operated small business. We are focused on residential Heating and Cooling in the Greater Puget Sound Area. As a collection of friends and family who started this company we believe in doing what’s best for our clients not what’s best for us. We believe everyone should feel comfortable in their own home. After all “We fight for your comfort”!

"These guys are amazing 👏. They accomodated an emergency request for a new furnace and heatpump system, pricing was not only competitive, but frankly a better deal overall. They were communicative, punctual, thorough, friendly, and I wish I had hired them the first round for our other home. Glad we found them!"

Tammy _ on October 2025


"Excellent company. Jack is amazing, he is nice and friendly and he has a keen eye for design. He is a master craftsman and a perfectionist. Arrives every day on time and always show up, has a wonderful crew that he brings onto the project. I would highly recommend Jack of All Trades for any project, not just bathroom remodel. I was pleased with his work and the price and how quickly he got the project done!"

Wendy Y on January 2022

Jack of All Trades at this time has 2 employees and there may be a need to add more the future. I do not use sub contractors at this time. All estimates are free.

"Excellent company. Jack is amazing, he is nice and friendly and he has a keen eye for design. He is a master craftsman and a perfectionist. Arrives every day on time and always show up, has a wonderful crew that he brings onto the project. I would highly recommend Jack of All Trades for any project, not just bathroom remodel. I was pleased with his work and the price and how quickly he got the project done!"

Wendy Y on January 2022


Avatar for AirPros Energy, LLC

AirPros Energy, LLC

4.84(
102
)
Approved Pro

AirPros Energy, LLC

4.84(
102
)
Approved Pro
Customers say: True professional
Recommended by 97% of Angi customers
Recommended by 97% of HomeAdvisor customers
18 local quotes requested

AirPros Energy, LLC, mission is to give the best value on high efficient heating and cooling products for your home or business. We install Daikin gas furnaces, air condensing heat pumps, air conditioners, water heaters, on demand water heaters, standby generators, electronic air cleaners, HEPA filters, gas fireplace and inserts. We also do custom duct work and gas piping.

"The professional technicians at AirPros were responsive and explained everything regarding the status of my furnace. I am pleased with their service and value...I would highly recommend them in the future. "

Mark H on July 2025

AirPros Energy, LLC, mission is to give the best value on high efficient heating and cooling products for your home or business. We install Daikin gas furnaces, air condensing heat pumps, air conditioners, water heaters, on demand water heaters, standby generators, electronic air cleaners, HEPA filters, gas fireplace and inserts. We also do custom duct work and gas piping.

"The professional technicians at AirPros were responsive and explained everything regarding the status of my furnace. I am pleased with their service and value...I would highly recommend them in the future. "

Mark H on July 2025


Avatar for BASSETT HOME HEATING INC.

BASSETT HOME HEATING INC.

4.93(
58
)
Approved Pro

BASSETT HOME HEATING INC.

4.93(
58
)
Approved Pro
Super Service Award
Customers say: True professional
Recommended by 98% of Angi customers
Recommended by 98% of HomeAdvisor customers
34 local quotes requested

Bassett Home Heating, Inc. is family owned and operated. We keep you warm in the winter and cool in the summer. With more than 30 years of experience, we know our business. We understand that customer care should be our top priority. We consider ourselves customer care specialists. You can take comfort in knowing that we will do our job well and will communicate with you about the work we do. We are here for you, whatever your heating and air conditioning needs may be. We also install heat pumps, furnaces, water heaters, fireplaces and gas piping. Why call just anybody? Bassett Home Heating is an established company with a name you can trust. We have an A+ Rating with the Better Business Bureau! Call us today at 425-398-1666 for all your home heating, cooling and total comfort needs.

"Best company to work with. Very professional, on time, polite, and unbeatable price."

Adrian I on August 2025

Bassett Home Heating, Inc. is family owned and operated. We keep you warm in the winter and cool in the summer. With more than 30 years of experience, we know our business. We understand that customer care should be our top priority. We consider ourselves customer care specialists. You can take comfort in knowing that we will do our job well and will communicate with you about the work we do. We are here for you, whatever your heating and air conditioning needs may be. We also install heat pumps, furnaces, water heaters, fireplaces and gas piping. Why call just anybody? Bassett Home Heating is an established company with a name you can trust. We have an A+ Rating with the Better Business Bureau! Call us today at 425-398-1666 for all your home heating, cooling and total comfort needs.

"Best company to work with. Very professional, on time, polite, and unbeatable price."

Adrian I on August 2025


Avatar for Green City Heating and Air Conditioning

Green City Heating and Air Conditioning

4.81(
873
)
Approved Pro

Green City Heating and Air Conditioning

4.81(
873
)
Approved Pro
Super Service Award
Customers say: Quick response
Recommended by 93% of Angi customers
Recommended by 93% of HomeAdvisor customers
41 local quotes requested

Jeff Simonson, the founding owner of Green City Heating and Air Conditioning and his family have been working in the heating and cooling HVAC industry for over 30 years. Being a local, family owned and operated company, ethics, experience, and assurance are key areas of focus. We pride ourselves in being available for all your HVAC needs. Reach out for a FREE quote on a new furnace, heat pump, ductless mini split system, air conditioner or water heater.

"Efficient and thorough repair of disconnected duct under the house. Very pleased, would rehire."

Cynthia R on May 2024

Jeff Simonson, the founding owner of Green City Heating and Air Conditioning and his family have been working in the heating and cooling HVAC industry for over 30 years. Being a local, family owned and operated company, ethics, experience, and assurance are key areas of focus. We pride ourselves in being available for all your HVAC needs. Reach out for a FREE quote on a new furnace, heat pump, ductless mini split system, air conditioner or water heater.

"Efficient and thorough repair of disconnected duct under the house. Very pleased, would rehire."

Cynthia R on May 2024

Showing 1-10 of 47
Heating Oil questions, answered by experts

NATE-certified technicians may charge slightly higher service fees compared to non-certified technicians. This is because NATE certification signifies a higher level of expertise and professionalism, often leading to more efficient and effective HVAC repairs and installations. While the upfront cost may be marginally higher, NATE-certified technicians can potentially save you money in the long run by reducing energy consumption, preventing frequent breakdowns, and extending the life span of your HVAC system. When looking for a local HVAC company to hire, it never hurts to ask about NATE certifications.

Costs depend on system age, type, labor, and whether part replacements are necessary.

It’s a better use of energy (and your money) NOT to run an ERV system all the time. Most experts recommend that you cycle your ERV system on and off throughout the year. However, the recommended advice could change based on your climate, the number of people in your home, the size and style of your home, and your heating and cooling system. Contact a local pro for more specific advice.

You need to service an HVAC system about twice per year, with a service including an inspection and basic maintenance. It’s best to schedule maintenance in the spring (after the furnace has been running and before the AC kicks on) and in the fall (after the AC worked hard all summer and before winter’s first chill arrives). 

Regular HVAC services will keep the system working as efficiently as possible, saving you money on utilities and larger repairs. HVAC maintenance costs around $250 per visit, while bigger repairs from forgotten upkeep could cost thousands.

Your HVAC manufacturer will give you instructions on how often you should service your system. Have your unit professionally serviced at least once a year when in doubt. 

Heat pump systems are different because they provide heating and cooling solutions for your home. In this case, you should have it serviced at least twice a year.

The homeowners guide to home care is here

From average costs to expert advice, get all the answers you need to get your job done.