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*The Angi rating for Energy Efficiency Auditing companies in Friday Harbor, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Energy Efficiency Auditing needs.
*The HomeAdvisor rating for Energy Efficiency Auditing companies in Friday Harbor, WA is a rating based on verified reviews from our community of homeowners who have used these pros to meet their Energy Efficiency Auditing needs.
Last update on November 25, 2025
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A-1 Builders & Adaptations Design Studio
A-1 Builders & Adaptations Design Studio
Since 1955 our award-winning design/build team has provided this county with a seamless approach to quality remodels and custom homes. We work hard before the project starts to make sure you are happy after the project is complete! Whether you choose a single service or the entire seamless cluster, our attention to detail will not falter.
Since 1955 our award-winning design/build team has provided this county with a seamless approach to quality remodels and custom homes. We work hard before the project starts to make sure you are happy after the project is complete! Whether you choose a single service or the entire seamless cluster, our attention to detail will not falter.

Arrow Insulation
Arrow Insulation
Call us today at (877) 658-9276 for a local and family owned company that prides itself on offering the highest standards of traditional customer service with the latest in insulation contractor technology. Our experts specialize in insulation removal, installation, and retrofit upgrades. We also provide home electrical services including; ductless heat pumps, knob & tube rewires, air quality, fan and lighting upgrades. Free Estimates; Energy Rebates Available. Award Winning Service For fastest response, please call (877) 658-9276
"The whole process was not pleasant. We went with Arrow because of the good reviews, but the insulation process was anything but easy. We have an older home that had nailed in dry wall. We decided to have the installation done through the home exterior in order to minimize clean up (we had a 3 month old at the time that we didnt want exposed to the dust/insulation particles). When the insulation was being blown in, many of our dry wall nails began to pop through the dry wall. We were never made aware of any of the potential problems with blowing in insulation through the home exterior, and this process created far more work than we were expecting. As for the exterior of our home, we were left with many siding boards damaged (which thankfully Arrow decided to pay for). Some of our siding could not get removed, and holes were instead cut into our siding. When these were initially patched, they looked awesome, but after only 1.5-2 months, the patch work began to show cracks, and now every hole that was created is visible from the street (some of the plugs have even been able to be moved around with very little pressure). This process has been a nightmare, and our home exterior, after almost 3 months, still is not what it was before the work was done."
Chris S on June 2020
Call us today at (877) 658-9276 for a local and family owned company that prides itself on offering the highest standards of traditional customer service with the latest in insulation contractor technology. Our experts specialize in insulation removal, installation, and retrofit upgrades. We also provide home electrical services including; ductless heat pumps, knob & tube rewires, air quality, fan and lighting upgrades. Free Estimates; Energy Rebates Available. Award Winning Service For fastest response, please call (877) 658-9276
"The whole process was not pleasant. We went with Arrow because of the good reviews, but the insulation process was anything but easy. We have an older home that had nailed in dry wall. We decided to have the installation done through the home exterior in order to minimize clean up (we had a 3 month old at the time that we didnt want exposed to the dust/insulation particles). When the insulation was being blown in, many of our dry wall nails began to pop through the dry wall. We were never made aware of any of the potential problems with blowing in insulation through the home exterior, and this process created far more work than we were expecting. As for the exterior of our home, we were left with many siding boards damaged (which thankfully Arrow decided to pay for). Some of our siding could not get removed, and holes were instead cut into our siding. When these were initially patched, they looked awesome, but after only 1.5-2 months, the patch work began to show cracks, and now every hole that was created is visible from the street (some of the plugs have even been able to be moved around with very little pressure). This process has been a nightmare, and our home exterior, after almost 3 months, still is not what it was before the work was done."
Chris S on June 2020
Smith Mechanical
Smith Mechanical
It is our pleasure to provide this information about Smith Mechanical. Thank you for considering using Smith Mechanical and we look forward to working with you in the near future. Smith Mechanical has provided quality mechanical services for over twenty years for the commercial, industrial and residential markets. We back up our work and warranty the equipment and our workmanship. Your Satisfaction is guaranteed. Smith Mechanical has a team of considerate professionals that work together with owners, contractors and architects. We design and install from your typical hydronic heating/cooling, forced air hybrid-dual fuel heating/cooling and ventilation systems to advanced systems such as variable refrigerate volume, reverse cycle chillers and geothermal heating and cooling systems. We also supply, install and repair most commercial kitchen equipment. Some of our typical projects are office buildings, retail stores, restaurants, medical facilities, schools, churches, manufacturing facilities and refineries. Smith Mechanical also installs and services kitchen equipment such as class 1 and 2 exhaust hoods with exhaust systems, grease ductwork and make up air systems. We also supply and install air lines, gas lines and refrigeration piping. Smith Mechanical designs, installs and services large refrigeration systems for grocery stores and other clients with like needs. This includes compressor rack systems, air or water cooled condensers, walk-in freezers and coolers, ice machines and all sorts of cooler and freezer cases. Smith Mechanical designs and installs controls systems for all our above HVACR systems. This ranges from simple thermostat controls to full building management controls that will automatically contact us for service if a problem arises. Smith Mechanical has a team of experienced service technicians that provide second to none 24/7 mechanical service. Smith Mechanical has built and maintained a reputation of honesty, quality and reliability. We spend very little on advertising. We rely on repeat customers and on customer referrals. Our customers come back to us project after project because of our service and quality. Attention to detail and proper planning are important to maintain our quality reputation. We are dedicated to exceeding your expectations on every single job. Smith Mechanical is located in Ferndale, WA. We have over 8,000 sq. ft. of office and shop space for our operation. We currently have 18 valued full time employees. In addition to meeting or exceeding applicable building codes, Smith Mechanical HVAC/R systems are designed and installed to meet or exceed standards set by SMACNA (Sheet Metal & Air Conditioning Contractors National Assoc.), ASHRAE (American Society of Heating, Refrigeration & Air Conditioning Engineers), ACCA ( Air Conditioning Assoc.), Washington State Energy Code, and Washington State Ventilation & Indoor Air Quality Code, along with other recognized industry standards. We at Smith Mechanical take safety of our workers very seriously, and are proud of our excellent safety record. Safety first is everyone’s responsibility on and off the job. Positive safety attitude has resulted in good working conditions for our employees, as well as a safe working environment. Our safety record speaks for itself: 0 lost work days over the last 20 years of business. Smith Mechanical’s employees are professionals. They maintain this by continual trade and industry training. Smith Mechanical is also active in industry related professional organizations. • Building Industry Association of Washington (BIAW) • American Society of Heating, Refrigeration & Air Conditioning Engineers (ASHRAE) • National Federation of Independent Business (NFIB).
It is our pleasure to provide this information about Smith Mechanical. Thank you for considering using Smith Mechanical and we look forward to working with you in the near future. Smith Mechanical has provided quality mechanical services for over twenty years for the commercial, industrial and residential markets. We back up our work and warranty the equipment and our workmanship. Your Satisfaction is guaranteed. Smith Mechanical has a team of considerate professionals that work together with owners, contractors and architects. We design and install from your typical hydronic heating/cooling, forced air hybrid-dual fuel heating/cooling and ventilation systems to advanced systems such as variable refrigerate volume, reverse cycle chillers and geothermal heating and cooling systems. We also supply, install and repair most commercial kitchen equipment. Some of our typical projects are office buildings, retail stores, restaurants, medical facilities, schools, churches, manufacturing facilities and refineries. Smith Mechanical also installs and services kitchen equipment such as class 1 and 2 exhaust hoods with exhaust systems, grease ductwork and make up air systems. We also supply and install air lines, gas lines and refrigeration piping. Smith Mechanical designs, installs and services large refrigeration systems for grocery stores and other clients with like needs. This includes compressor rack systems, air or water cooled condensers, walk-in freezers and coolers, ice machines and all sorts of cooler and freezer cases. Smith Mechanical designs and installs controls systems for all our above HVACR systems. This ranges from simple thermostat controls to full building management controls that will automatically contact us for service if a problem arises. Smith Mechanical has a team of experienced service technicians that provide second to none 24/7 mechanical service. Smith Mechanical has built and maintained a reputation of honesty, quality and reliability. We spend very little on advertising. We rely on repeat customers and on customer referrals. Our customers come back to us project after project because of our service and quality. Attention to detail and proper planning are important to maintain our quality reputation. We are dedicated to exceeding your expectations on every single job. Smith Mechanical is located in Ferndale, WA. We have over 8,000 sq. ft. of office and shop space for our operation. We currently have 18 valued full time employees. In addition to meeting or exceeding applicable building codes, Smith Mechanical HVAC/R systems are designed and installed to meet or exceed standards set by SMACNA (Sheet Metal & Air Conditioning Contractors National Assoc.), ASHRAE (American Society of Heating, Refrigeration & Air Conditioning Engineers), ACCA ( Air Conditioning Assoc.), Washington State Energy Code, and Washington State Ventilation & Indoor Air Quality Code, along with other recognized industry standards. We at Smith Mechanical take safety of our workers very seriously, and are proud of our excellent safety record. Safety first is everyone’s responsibility on and off the job. Positive safety attitude has resulted in good working conditions for our employees, as well as a safe working environment. Our safety record speaks for itself: 0 lost work days over the last 20 years of business. Smith Mechanical’s employees are professionals. They maintain this by continual trade and industry training. Smith Mechanical is also active in industry related professional organizations. • Building Industry Association of Washington (BIAW) • American Society of Heating, Refrigeration & Air Conditioning Engineers (ASHRAE) • National Federation of Independent Business (NFIB).
Bellingham Bay Builders
Bellingham Bay Builders
Bellingham Bay Builders was founded in 2004 as a general contractor and organized as a worker's cooperative, we offer a different way of doing business. Many of our staff are not only dedicated, experienced professionals but also owners of the business. With an owner's perspective our crews run their jobsites (and your homes) with a high degree of professionalism and orderliness. With our long track record in green building and LEED AP's we bring unparalleled expertise to your project. We place a special emphasis on providing good value through maximizing energy efficiency, building for low maintenance & durability, employing healthy indoor air strategies, and careful project management. Besides providing thorough and consistent project management our crews typically provide all the carpentry work on your project.
Bellingham Bay Builders was founded in 2004 as a general contractor and organized as a worker's cooperative, we offer a different way of doing business. Many of our staff are not only dedicated, experienced professionals but also owners of the business. With an owner's perspective our crews run their jobsites (and your homes) with a high degree of professionalism and orderliness. With our long track record in green building and LEED AP's we bring unparalleled expertise to your project. We place a special emphasis on providing good value through maximizing energy efficiency, building for low maintenance & durability, employing healthy indoor air strategies, and careful project management. Besides providing thorough and consistent project management our crews typically provide all the carpentry work on your project.

A+Design
A+Design
Owner-operated. No subs. Cost is determined by the job. I am a residential designer/drafter. I am also a Green Build Design Specialist (Eco-Friendly), and a Residential Accessibilty Design Specialist (for handicap access)..
"Ray was very professional and punctual. Even though my project seemed small to start with, it had a few difficulties to work with. He coordinated well with the Structural Engineer to get things right and absorbed a lot of work to get the drawings done on time. He is very prompt on returning phone calls or e-mail messages and answered all my questions. He was pretty detailed in his drawings as well."
vikas P on March 2018
Owner-operated. No subs. Cost is determined by the job. I am a residential designer/drafter. I am also a Green Build Design Specialist (Eco-Friendly), and a Residential Accessibilty Design Specialist (for handicap access)..
"Ray was very professional and punctual. Even though my project seemed small to start with, it had a few difficulties to work with. He coordinated well with the Structural Engineer to get things right and absorbed a lot of work to get the drawings done on time. He is very prompt on returning phone calls or e-mail messages and answered all my questions. He was pretty detailed in his drawings as well."
vikas P on March 2018
Energy Solutions Project
Energy Solutions Project
We are a family-owned business that began as a nonprofit organization and retains that spirit. We believe deeply in energy efficiency, 'sustainable building', and sustainable energy use. Our staff has been certified nationally for building analysis (building energy assessments) by the Building Performance Institute, and regionally certified by Puget Sound Energy and Seattle City Light. We are also nationally certified to do infrared thermography.
We are a family-owned business that began as a nonprofit organization and retains that spirit. We believe deeply in energy efficiency, 'sustainable building', and sustainable energy use. Our staff has been certified nationally for building analysis (building energy assessments) by the Building Performance Institute, and regionally certified by Puget Sound Energy and Seattle City Light. We are also nationally certified to do infrared thermography.
Solar Wolf Energy
Solar Wolf Energy
Solar Wolf is a full service solar company with a great reputation and an old world belief to our customers. To under-promise and over-deliver, period. We have 18 years experience in construction, remodeling, roofing, solar water heaters, solar pv systems, battery back-up systems and much more. See what Solar Wolf Energy can do for you!
Solar Wolf is a full service solar company with a great reputation and an old world belief to our customers. To under-promise and over-deliver, period. We have 18 years experience in construction, remodeling, roofing, solar water heaters, solar pv systems, battery back-up systems and much more. See what Solar Wolf Energy can do for you!
Tom Bernard
Tom Bernard
I do all system tech work on car and boats
I do all system tech work on car and boats
Bayview Electric
Bayview Electric
At Bayview Electric we provide Service Calls, Design/Engineering, Lighting Retrofit, Energy Efficiency Audits for Businesses, Data/Communication work and panel fabrication.
At Bayview Electric we provide Service Calls, Design/Engineering, Lighting Retrofit, Energy Efficiency Audits for Businesses, Data/Communication work and panel fabrication.
The Friday Harbor, WA homeowners’ guide to energy efficiency auditing services
From average costs to expert advice, get all the answers you need to get your job done.
•Discover the average home energy audit cost, what impacts pricing, and how to save money on your audit. Get transparent, expert-backed cost info for homeowners.

A home energy audit is a detailed write-up of how to lower your utility bills and increase your comfort level. Find out if they’re worth the cost.
•Get a detailed breakdown of thermal imaging home inspection costs, including average prices, cost factors, and tips to help homeowners budget.

Home energy audits can identify ways to make your home more energy-efficient. Learn whether an energy audit is a good investment for your home.
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