We pride ourselves on being the source for all of your HVAC needs. We not only design mechanical systems, we install residential and light commercial new units, and can retrofit and upgrade your older unit as well. Whether you need to replace a furnace, single rooftop unit, ductwork or a total system upgrade, Andersen Heating, Inc., has the experience and capabilities to provide the right solution for you.
"They were prompt, did as promised, left the job site clean and very professional."
Mike J on June 2023
We pride ourselves on being the source for all of your HVAC needs. We not only design mechanical systems, we install residential and light commercial new units, and can retrofit and upgrade your older unit as well. Whether you need to replace a furnace, single rooftop unit, ductwork or a total system upgrade, Andersen Heating, Inc., has the experience and capabilities to provide the right solution for you.
"They were prompt, did as promised, left the job site clean and very professional."
Mike J on June 2023
Are you looking for quality heating and air cooling services in the Portland area? Sunset Heating & Cooling has been a trusted name in the HVAC industry for over 100 years! If you're looking for a reputable AC and heating company that provides professional work and exceptional customer service for a fair price, you'll find it with Sunset Heating & Cooling!
"We have had the equipment installed since June but nothing works. If someone comes out, they say someone needs to fix the issue and leave. We call several times a day and can't get past the call center."
Ronna K on July 2024
Are you looking for quality heating and air cooling services in the Portland area? Sunset Heating & Cooling has been a trusted name in the HVAC industry for over 100 years! If you're looking for a reputable AC and heating company that provides professional work and exceptional customer service for a fair price, you'll find it with Sunset Heating & Cooling!
"We have had the equipment installed since June but nothing works. If someone comes out, they say someone needs to fix the issue and leave. We call several times a day and can't get past the call center."
Ronna K on July 2024
We have over 8 years of industry experience, and is dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company foundation is built on honesty and integrity. We specialize in Central A/C, Heating and Furnace systems in addition to a variety of HVAC-related projects. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction!
"He has a great work ethic and exceptional customer service! I would use him all of the time!"
Jake Y on June 2022
We have over 8 years of industry experience, and is dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company foundation is built on honesty and integrity. We specialize in Central A/C, Heating and Furnace systems in addition to a variety of HVAC-related projects. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction!
"He has a great work ethic and exceptional customer service! I would use him all of the time!"
Jake Y on June 2022
"ACS installed a new Bryant heat pump + furnace. The equipment is high quality and the team was knowledgeable, flexible, and willing to answer all my questions. They accommodated a change in scope on the day of install from just installing a heat pump to installing a furnace + heat pump combo. This set the team back a few hours for the last minute parts request, but they powered through a very long day and stayed until the job was finished. All customer service goes directly through the owner operator. Originally this seemed like a plus, but I think they would benefit from support staff. I needed to edit and downgrade this review after a few negative experiences. Some changes are related to issues noticed after the install. The unit was not secured to the pad outdoors and also was not attached to the house. Holes cut into the corner of the garage slab in order to pass through the lines were not patched, leaving a break in the envelope. Mark promised to follow up on both of these, but he did not send anyone out to take care of this. Mark also directly promised that our install would qualify for Energy Trust of Oregon incentives for $3000, when in fact it is clear after speaking directly with Energy Trust representatives that our install did not qualify for any amount of rebate. This promise was echoed throughout the quote and the install process. I believe that the lack of a support staff is causing some shortcutting or disorganization when it comes to managing some of these details - I would prefer to assume that ACS did not know the details of the incentive rather than that they purposefully deceived me, but I dont feel comfortable recommending them given these circumstances."
Sam C on July 2024
"ACS installed a new Bryant heat pump + furnace. The equipment is high quality and the team was knowledgeable, flexible, and willing to answer all my questions. They accommodated a change in scope on the day of install from just installing a heat pump to installing a furnace + heat pump combo. This set the team back a few hours for the last minute parts request, but they powered through a very long day and stayed until the job was finished. All customer service goes directly through the owner operator. Originally this seemed like a plus, but I think they would benefit from support staff. I needed to edit and downgrade this review after a few negative experiences. Some changes are related to issues noticed after the install. The unit was not secured to the pad outdoors and also was not attached to the house. Holes cut into the corner of the garage slab in order to pass through the lines were not patched, leaving a break in the envelope. Mark promised to follow up on both of these, but he did not send anyone out to take care of this. Mark also directly promised that our install would qualify for Energy Trust of Oregon incentives for $3000, when in fact it is clear after speaking directly with Energy Trust representatives that our install did not qualify for any amount of rebate. This promise was echoed throughout the quote and the install process. I believe that the lack of a support staff is causing some shortcutting or disorganization when it comes to managing some of these details - I would prefer to assume that ACS did not know the details of the incentive rather than that they purposefully deceived me, but I dont feel comfortable recommending them given these circumstances."
Sam C on July 2024
We have over 30 years of industry experience, and is dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company foundation is built on honesty and integrity. We specialize in Boiler, Heating and Furnace systems in addition to a variety of HVAC-related projects. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction!
We have over 30 years of industry experience, and is dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company foundation is built on honesty and integrity. We specialize in Boiler, Heating and Furnace systems in addition to a variety of HVAC-related projects. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction!
Northwest Duct Services is a family owned and operated business, specializing in residential and small commercial applications. We believe in building a strong client relationship. We work closely with our clients to establish complete trust. My team has over ten years of experience and expert knowledge to provide complete and total satisfaction. This ensures that we are the contractor of choice. We aim to make our projects as clear and easy to understand as possible. We look forward to working with you. "Let Us Do The Dirty Work!
"Jesus is fantastic. Our bedroom was hot and stuffy. He added an extra vent to our existing duct, saving us about $18,000 on an additional AC unit."
Concetta W on October 2024
Northwest Duct Services is a family owned and operated business, specializing in residential and small commercial applications. We believe in building a strong client relationship. We work closely with our clients to establish complete trust. My team has over ten years of experience and expert knowledge to provide complete and total satisfaction. This ensures that we are the contractor of choice. We aim to make our projects as clear and easy to understand as possible. We look forward to working with you. "Let Us Do The Dirty Work!
"Jesus is fantastic. Our bedroom was hot and stuffy. He added an extra vent to our existing duct, saving us about $18,000 on an additional AC unit."
Concetta W on October 2024
Best products. Best Prices. Best workmanship. Top-rated, same-day HVAC services keeping your home comfy and energy-efficient all year round. With 20+ years of experience, Comfy HVAC provides expert installation, service, and repair for furnaces, air conditioners, heat pumps, and mini-splits. We offer free estimates, honest pricing, and a workmanship guarantee to ensure your comfort in every season.
Best products. Best Prices. Best workmanship. Top-rated, same-day HVAC services keeping your home comfy and energy-efficient all year round. With 20+ years of experience, Comfy HVAC provides expert installation, service, and repair for furnaces, air conditioners, heat pumps, and mini-splits. We offer free estimates, honest pricing, and a workmanship guarantee to ensure your comfort in every season.
At Pro Heating and Cooling, Inc., we take great pride in our experience, expertise, quality and customer service that we provide to meet the consumers' needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.
"Couldn't of been better."
Dani t on October 2016
At Pro Heating and Cooling, Inc., we take great pride in our experience, expertise, quality and customer service that we provide to meet the consumers' needs. It is our mission to provide excellent workmanship and complete customer satisfaction from start to completion of a project. In order to understand the needs and expectations of our customers, we take great care to work and communicate with every customer in a professional manner. Our reputation is based on service, safety and quality, regardless of how large or small the job.
"Couldn't of been better."
Dani t on October 2016
We are dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company is built on honesty and integrity. We specialize in central A/C and cooling systems as well as heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction. With several 0% financing options we have a great solution for all budgets.
"job not done yet"
Thomas C on May 2025
We are dedicated to providing our clients with the very best in installation, service, and repair for your heating and cooling needs. Our company is built on honesty and integrity. We specialize in central A/C and cooling systems as well as heating and furnace systems. We take pride in the quality of our work and our commitment to outstanding results. We look forward to building long-term relationships with our clients, and guarantee your satisfaction. With several 0% financing options we have a great solution for all budgets.
"job not done yet"
Thomas C on May 2025
Evergreen Plumbing and Mechanical provides full service whenever our crew comes out to a customer’s home. Being family-owned and operated for the last 20 years, dependable and prompt service our customers can count on is the Evergreen way.
"Camerron was awesome and did great work. Everyone we worked with was friendly and helpful"
Alex S on March 2025
Evergreen Plumbing and Mechanical provides full service whenever our crew comes out to a customer’s home. Being family-owned and operated for the last 20 years, dependable and prompt service our customers can count on is the Evergreen way.
"Camerron was awesome and did great work. Everyone we worked with was friendly and helpful"
Alex S on March 2025
Consider replacing your gravity furnace when it's over 30 years old, when you experience frequent system failures, or when your heating bills continue rising despite maintenance. Many older gravity systems operate at substantially lower efficiency rates compared to modern alternatives, often 50% to 60% versus the 80% to 98% efficiency of contemporary furnaces.
Replacement also makes sense when your existing system shows signs of deterioration that could affect safety or when professional inspection reveals significant issues.
Most gravity furnace replacements require between six and 12 hours of professional labor, spanning one to two working days, depending on scheduling and complexity. Basic installations with minimal complications may be completed in a single day, while projects requiring extensive ductwork modifications or asbestos remediation will require additional time.
The timeline includes removal of the old system, preparation of the installation area, placement and connection of the new furnace, and thorough testing.
Watch for warning signs, including inconsistent heating throughout your home, unusual noises during operation, visible corrosion or damage to the heat exchanger, and steadily increasing energy consumption. If your furnace requires frequent repairs or if you notice a yellow or flickering pilot light instead of a steady blue flame, these may indicate serious issues.
Age remains a primary consideration—systems over 30 years old warrant replacement rather than continued repair.
Well-maintained gravity furnaces that pass professional safety inspections can continue operating, but they inherently carry more risk factors than modern systems. Potential concerns include less efficient combustion that may produce carbon monoxide, deteriorating components that could create fire hazards, and the possible presence of asbestos in insulation materials.
Modern furnaces incorporate numerous safety improvements, including automatic shutdown features, sealed combustion chambers, and electronic ignition systems that eliminate standing pilot lights.