
Serving Waimanalo, 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."





+7


Serving Waimanalo, 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."





+7
Serving Waimanalo, HI and surrounding areas
Approved
In business since 2016
Free estimates
Credit card accepted
"Mahalo to the team Josh and Chaz. They did a full system replacement and it turned out wonderful"

Serving Waimanalo, 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 Waimanalo, HI and surrounding areas
Approved
In business since 1987
Credit card accepted
Offers commercial services
Here at Steve's Plumbing & AC Service, Inc., we are a Maui plumbing and air conditioning contracting company that specializes in AC repair and replacement, plumbing repair, service work, and remodeling. We have the experience, manpower, and inventory necessary to handle any project, no matter whether it is large or small. We are also a family-owned and operated business. We are committed to providing excellent workmanship and high-quality products for every project we undertake. We offer a 100% customer satisfaction guarantee and 24-hour emergency services. Up Front Pricing - You approve the cost before we start the work. We charge by the job, not the hour. No one wants surprises when the job is done! Fast Service, Emergency Service. Radio Dispatched, Fully Stocked Trucks in Your Area Daily. When you have an emergency, you need to know it will be fixed in a hurry. We understand and can be there within hours not days! Trusted and Recommended ,Call Us Today!

Serving Waimanalo, 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 Waimanalo, HI and surrounding areas
Emergency services offered
Credit card accepted
"They not only arrived on time but were very thorough and efficient in their services and in the information they provided me about my AC system and suggested a cleaning every 6mths which I now know and will continue to do to keep my family and house cool and clean air! Thank you sooo much Ultimate Air!???"





+36
Serving Waimanalo, HI and surrounding areas
In business since 2020
Free estimates
Emergency services offered
We have the experience and dedication to bring your dreams to reality! Specializing in Heating and A/C Services, we guarantee your satisfaction, and we won’t leave until the job is done right. We pride ourselves on the quality work we provide, while delivering great customer service! Call or click to schedule a free estimate today!\n*5% DISCOUNT FOR MILITARY DISCOUNT!





+2

Serving Waimanalo, 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.
"



Serving Waimanalo, HI and surrounding areas
In business since 2020
Free estimates
Emergency services offered
Lasala Handyman Services offers a variety of services to cater to your needs. Whether it involves uninstalling or installing appliances, furniture assembly, or even custom home modifications, we are able and capable of getting the job done. We value integrity, quality work, and the clients vision. We are local to the area and offer affordable services. Please feel free to contact us for your next project.





+53

Serving Waimanalo, HI and surrounding areas
In business since 2009
Free estimates
Emergency services offered
"RevoluSun did a fantastic job. They visited my home to scope out the job, and we discussed various options. They provided a proposal with two options, and we ended up executing a third option - which was a hybrid of the two. The system created upstairs and downstairs zones, and minimized the number of exterior units by using multiple interior units on two of the three exterior units. The installation minimized the visual impact of the electrical conduits & trim duct lines on the exterior of the house, and it avoided having to punch through the roof. The system has been operational for almost a month, and it has functioned as planned with no problems."
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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