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Services - Efficient

Air duct cleaning

HVAC installation or replacement

HVAC system repair

1 More Service

HVAC system maintenance

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Recommended Reviews - Efficient

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Before
Belinda B.

We needed service in our Sushi restaurant in Loma Linda. John was very efficient and on top of things. He replace our thermostat and resolve our issue regarding the AC. He knows what he is talking about. Did minor work in our kitchen also. He is very dependable. I highly recommend this company.

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2 days ago

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8 months ago

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John L.

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8 months ago

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10 months ago

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John L.

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2 years ago

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3 years ago

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2 years ago

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2 years ago

Awesome company with this week heatwave they were able to squeeze me in with their busy schedule. Abraham was great!!

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2 years ago

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2 years ago

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12 years ago

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Review Highlights - Efficient

John & his three man crew did an excellent job they are very efficient (hence the name), trustworthy and professional.

Mentioned in 7 reviews

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Diamond Air Services

Diamond Air Services

(502 reviews)

My old HVAC unit was old and the electric bill was crazy high. I was looking for a replacement and…read morereceived a couple estimates for different options and brands. Among the options, Anthony did offer a good price for CARRIER - 4.0 TON 18 SEER VARIABLE SPEED HEAT PUMP AND MULTI STAGE FURNACE. I did a research about this particular unit and decided to go with it rather than going with other brands like AC Pro and Daikin where they asked for about the same price. Anthony also matched the 12 years warranty offer like Daikin. 24 months payment with 0 interest was also another good deal. The crew Jose, Ethan and Oscar showed up on time and completed the installation in one and a half day. The old unit was removed and platform was inspected before putting the new one in place.they also installed a new breaker box for safety. The finished looks a lot nicer than my 20 years old unit. Overall I'm happy with the service and can't wait to seeing how it gets us in summer.

I had a really great experience with Diamond Air Service. Huge shoutout to Howie, Anthony, Matt,…read moreand Sal--they were all extremely professional, friendly, and just genuinely good people. You can tell they take pride in their work and really care about their customers. They explained everything clearly, were respectful of my space, and made the whole process smooth and stress-free. The quality of their work was excellent, and I felt like I was in good hands the entire time. It's not always easy to find a team that's both skilled and humble, but they definitely are. The only minor thing I noticed was that there were a few small bits of trash left behind--nothing major at all, just little things here and there. Honestly, it didn't take away much from the overall experience. Overall, I highly recommend Diamond Air Service and would definitely use them again!

The Dryer Vent Experts - 32 years of expert dryer duct/vent cleaning and repair. 
 We do not clean air conditioner ducts  or appliance repair. We are near you!

The Dryer Vent Experts

(129 reviews)

Super kind friendly and knowledgeable guy. Completely fixed my dryer issue. If you're wondering if…read moreit's your dryer or your vent having a problem.... disconnect it and run a load without it connected (it's safe!). Our dryer wasn't drying and our clothes stayed wet for hours in a new dryer we knew worked because we tested it without the vent hooked up. He Showed up early, got the job done quick and right. Would totally recommend him, our clothes dry in 45 minutes now and I feel safe about what's under the house for a fire hazard. Great flat rate and competitive rates for the more extensive repair we needed.

My dryer flashed a dryer vent error code one evening after we had returned from vacation and had…read moreseveral loads of laundry to do. I quickly checked out my Yelp app and was leaning towards The Dryer Vent Experts given his great reviews and the fact that he was local. I sent out several requests since I was t sure he would be able to come soon enough. I need not have worried. Rene was one of the first to respond and the first who could make it out to my home. He also offered the best price. Coordination was easy via Yelp messaging and text. The very next afternoon, Rene was at my place and did a quick check confirming that the issue was my dryer vent and not the dryer. He cleaned my dryer vent and lines thoroughly and pulled out an amazing amount of stuff from both ends. Rene confirmed that I was cleaning my lint catcher and dryer appropriately and explained that even with the best cleaning, the vents would get dirty and could become a fire hazard. Hence, he recommended yearly maintenance. Definitely something that is now on my to do list! Highly recommend Rene from The Dryer Vent Experts!

Dr Dio Heating & Air Conditioning - Your prescription for comfort !

Dr Dio Heating & Air Conditioning

(386 reviews)

Dr. Dio was quick and straight to the point during his initial visit and did not waste my time. He…read morewas knowledgeable, trustworthy, and offered competitive pricing. I decided to go with him to replace my 16+ year old AC condenser and coil after a major leak. He and his crew were professional, answered all my questions, and showed up on time in the morning as promised. They worked efficiently and finished by early afternoon. I also appreciated the attention to detail. The new condenser breaker box was smaller than the old one and exposed a nail hole and old paint, and his team took the time to fill it and use my paint to match the area. Very smooth experience overall. Highly recommend.

You know they're legit when they can tell you the issue even before they look at your system…read more I contacted Dio in the morning and he got back to me quickly, letting me know that he can swing by same day. He and his son showed up and i described the issue (AC was blowing warm air but was working fine just a few months ago). His son checked my compressor capacitor, and just as he had said, it turned out to be the issue! They were able to quickly replace the capacitor and got my AC back up and running in under 30 minutes. Dio was extremely communicative, letting me know when he'd show up, and also had me try a few things before arriving. Also super fairly priced, and again, I'm very appreciative that he and his son were able to come resolve my issue during this heat wave!

All City Plumbing, Air & Electrical - All City Plumbing, Air & Electrical

All City Plumbing, Air & Electrical

(4.7k reviews)

Service Maintenance to our Air Conditioner was great! Gary Lopez was very knowledgeable,…read moreprofessional and nice. His work was done in quality time and his suggestions were appreciated. We added a hard start to our unit and felt the price was reasonable. Gary's start to finish time was quicker than we anticipated. Thank you All City again for taking care of us!

Beware of this company. They provided plumbing services at my 87 year old mother's house. The first…read morequote was for $19,000 for a redrain of the drainage system. Then they said there was tree root discovered in the line. They quoted $13,000 more to resolve it. There were no options provided for hydrojetting and a liner. We do not know anything about plumbing, so we did not question the additional cost. We had to trust the techs providing the service. We requested a refund and the company offered $4,000.00. We feel that given the cost, we are warranted a higher refund. The company refused. Although the owner states that options were given to my mother, they were not. I, (daughter), was there at the time of the tech's explanation of the work and so was my cousin. The tech spoke to my mother in Spanish, my cousin speaks and understands Spanish, and she also stands firm that no options were given to my mother regarding the option of hydrojetting and liner. If there were options my mother would have chosen the lesser cost. We are very upset with the dishonesty of this company. So, make sure you research costs of other plumbing companies before using this one.

MC Duct Cleaning & Chimney Sweep - CSLB California Contractor's License

MC Duct Cleaning & Chimney Sweep

(958 reviews)

This is the second time I've used him, and he has been fantastic both times. The first time he came…read moreout, he did a full fireplace sweep and was extremely thorough, professional, and reasonably priced. Recently, I thought I might have a dead rat in my fireplace and was hoping for a same day appointment, but he wasn't available. I ended up calling another company, and they came out and immediately tried to upsell me on multiple expensive services. Something didn't feel right, so I decided to get a second opinion and called him back. When he came out, he did another fireplace sweep and also repaired cracks in both the exterior and interior of my fireplace. He took the time to carefully inspect everything and honestly told me those additional services the other company recommended were not necessary. I really appreciated his honesty and not trying to take advantage of the situation. His pricing is very fair, and his work is excellent. It's rare to find someone this honest, skilled, and trustworthy. I highly recommend him and will continue to use him in the future.

Jesse at MC Duct Cleaning & Chimney Sweep was excellent. I called around 11:30 AM and he was out…read morethe same day and finished by 2:30. He cleaned our ducts, serviced the inside of the dryer stack, and replaced the roof vent cap with the proper system since the old one wasn't designed for dryers. Super efficient, great communication, and very fair pricing for the amount of work done. Highly recommend.

Efficient - hvac - Updated May 2026

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