
Serving Kunia, HI and surrounding areas
Approved
In business since 2023
Emergency services offered
Warranties offered
"On time, efficient, and honest"





+46


Serving Kunia, HI and surrounding areas
Approved
In business since 2023
Emergency services offered
Warranties offered
"On time, efficient, and honest"





+46
Serving Kunia, HI and surrounding areas
Approved
In business since 2016
Free estimates
Credit card accepted
Oahu Electric & Air provides licensed, code-compliant electrical services for homes and businesses across Oahu. From troubleshooting and repairs to new installations, lighting, panel upgrades, and EV charger setups, our electricians handle projects of all sizes with precision and care. Every job is completed in-house by licensed professionals and built to meet current NEC and City & County of Honolulu requirements - delivering safe, reliable electrical work you can trust.

Serving Kunia, HI and surrounding areas
Approved
Free estimates
Warranties offered
Small jobs welcome
"Mana Mechanical’s owner, David, is a responsible professional who takes his commitments seriously. I needed to replace our old rooftop AC duct urgently. David was the only one who committed to meeting our aggressive schedule. He was honest with me that this would be his new company’s first job. I was a bit anxious, but decided to take a chance because I was impressed by his diligence during his on-site inspection. David acted as the general contractor, hiring engineers, electrician, crane operators, etc. His operation was flawless despite several unforeseen challenges, which he spent extra time and energy resolving himself. He even took extra work not included in original agreement staying late to finish them after his team had gone home. Even after the job was finished and paid for, he provided a detailed report with recommendations for other concerns he noticed on our rooftop. I am so grateful to have met David and highly recommend Mana Mechanical for your next project."

Serving Kunia, HI and surrounding areas
In business since 2021
Free estimates
Credit card accepted
"It was shocking to see what we have been living with as far as air quality for many years. Lance is very knowledgeable and provided me with a better understanding of my system. We instantly noticed the difference in air quality. Thank you Lance for providing my family and I with professional service, fair pricing, and an overall excellent experience. We definitely will be using you in the future."





+44

Serving Kunia, 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 Kunia, HI and surrounding areas
In business since 2020
Free estimates
Emergency services offered
"Super awesome! They’re such friendly people and they did an amazing job at cleaning my ac. Would definitely hire them again!"





+2

Serving Kunia, HI and surrounding areas
In business since 2020
Free estimates
Emergency services offered
"Ray did a great job. Courteous, professional, and reasonably priced. I would hire Lasala Handyman Services again."





+53

Serving Kunia, HI and surrounding areas
In business since 2022
Credit card accepted
"It was good. They were professional. They got the job done correctly."
Serving Kunia, HI and surrounding areas

Serving Kunia, HI and surrounding areas
In business since 2014
Free estimates
Emergency services offered
"Kyle has done truly fantastic work for us in a very reasonable amount of time. Our church decided to renovate our church cottage and convert it from a Sunday school house into a parsonage for our pastor to live. Our cottage had no bathrooms or bedrooms and was a large open space. With Kyle's help and input we were able to draw up blueprints to convert the space into a 3 bedroom 2 bath with a new kitchen, utility room, and living room. We had several ideas and he helped us refine them and told us when we were on the right path or when it was unrealistic. Within a month we were able to have a viable plan to begin construction and our pastor was able to move in after three months of work. This included reorganizing walls, running electric/water, floors, installing closets, new kitchen cabinets/appliances, a water heater, washer/dryer hookups, new windows, doors, and termite damage repair. He was flexible when we needed to bring in separate crews to do fumigation, A/C units, and roof repairs. He worked with the other contractors to make sure they had what they needed (delaying drywall for a week and finding other projects to do so the A/C crew could run cords inside the wall; running exhausts a week earlier than planned so the roofers could single around them...etc). He has always been very professional and his work is beautiful. He takes such pride in his work and will make sure your projects look their best. Kyle is easy to get ahold of and communication has been open throughout the entire project. I would definitely work with Kyle again."





+52
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.
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