Serving Kahului, HI and surrounding areas
Approved
In business since 1987
Free estimates
Emergency services offered
"Was introduced to ion/filtration system for whole house. Many advantages going with such a system."
+22
Serving Kahului, HI and surrounding areas
Approved
Free estimates
Warranties offered
Small jobs welcome
Mana Mechanical LLC provides reliable HVAC and sheet metal services across Hawaii. We specialize in ductwork, fans, wallcaps, louvers, grilles/registers/diffusers, and damper installations—done clean, code-compliant, and built to last. Whether you need a repair, replacement, or a new install, we communicate clearly, show up prepared, and treat your property with respect.\n\nWe’re licensed in Hawaii (C-52 HVAC & C-44 Sheet Metal) and focus on safe, professional workmanship from start to finish. Share a few details about your project and your ideal timeline, and we’ll help you plan the next steps and get you a straightforward quote.
Serving Kahului, HI and surrounding areas
In business since 2021
Free estimates
Credit card accepted
"Excellent customer service and care. All work was throughly explained and pictures provided so we could see what was done in the attic. Lance was also patient with us and educated us on things we could be doing to help maintain the system. I appreciated the time he took with us and the follow up! Won’t hesitate to call again and HIGHLY recommend others do same!"
+44
Serving Kahului, HI and surrounding areas
In business since 2010
Emergency services offered
Credit card accepted
"I was having a problem with MS Office not responding and other files being very, very slow to open. Jim started looking for the cause right away. He did numerous checks for viruses, malware, and various other things that can go wrong. He vigorously pursued a resolution pretty steadily for two days before determining it was a malfunctioning external backup system that was causing the problem. With that finding, he promptly got my computer running smoothly and very fast again. He made two trips to my house; on the first one, he had to cross a sheet of ice in my driveway. Jim is a very capable and experienced computer analyst that will get after your problem because he fully understands the importance of, and the need to have a working computer in the house.
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Serving Kahului, HI and surrounding areas
In business since 2008
Free estimates
Credit card accepted
"The staff were very professional and showed up when they said they would. They finished the installation quickly and went the extra mile to make sure I'm happy with my AC system. Excellent quality in the workmanship. The system is perfect for my condo and I'm happy with the outcome as well as the cost for the system installation."
Serving Kahului, HI and surrounding areas
My name is Isaac Tanodra. I’ve been working for the Plumbers Union, Local 675 for 15 years. I have my Journeyman’s plumber state license and specialize in new and retrofit plumbing. I also am able to install split system air conditioning units. I am a small business but will provide neat, clean, and efficient work that is lifetime guaranteed.
+10
Serving Kahului, HI and surrounding areas
In business since 2021
Free estimates
Credit card accepted
Air Perfection LLC is committed to excellence every aspect of our business. We uphold a standard of integrity bound by fairness, honesty and personal responsibility. Our distinction is the quality of service we bring to our customers. Accurate knowledge of our trade combined with ability is what makes us true professionals. Above all, we are watchful of our customer's interests and make their concerns the basis of our business. Please give us a call today!
+65
Serving Kahului, HI and surrounding areas
In business since 2014
Free estimates
Emergency services offered
Our mission is to be a provider that brings back the personal touch with our customers. We will build a relationship that will last a lifetime after you see our quality work. As a locally owned and operated business we feel invested in our clients and constantly strive for customer satisfaction. We won't leave until the job is done right! Call or click to schedule an estimate today!
Serving Kahului, HI and surrounding areas
In business since 1971
Credit card accepted
"Our house is covered by American Home Shield. So, they'll find someone if I need something done to my air conditioner or my heating system. I don't know the cost off hand."
+2
Serving Kahului, HI and surrounding areas
In business since 2023
Free estimates
Emergency services offered
Aloha! I am Michael Cichon, schooled in Switzerland, 20+ years of experience in maintenance & repair, and with an acute attention to detail, I am here to make sure a job is done the Proper Way. With a broad range of skills, myself and my team will spend the time to understand what you want to accomplish and give you the options available to see your vision through. I am happy to repair, or build and find creative solutions that work best for you. From ceilings to floors, electrical, lighting, plumbing, drywall, decking, irrigation, mechanical work, and all sorts of renovations, Proper Services will meet or exceed your expectations.
+2
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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