HVAC reviews in Derry, New Hampshire

Ernie and George were awesome to deal with and worked hard to get us on the schedule to replace our AC unit even with the HVAC buiness being straight out. Promoted, courteous and professional!!

Our AC turned off yesterday and even on a Sunday they answered our call and scheduled us an appointment for the following day! They service central AC, which is rare. Super friendly, very insightful, and reasonable pricing! We'll definitely be using them again in the future! Choose Cal's for you air conditioning needs!

Ernie was great! Found him on Angie’s list and couldn’t have been happier. I received 4 quotes for a ductless split system on my home with an air handler for the second floor and an in-law suite as well. Ernie was extremely competitive with his pricing. Ernie was on time, extremely clean and meticulous. He even vacuumed the house after installing. He took the time to explain in detail how everything worked and the most efficient way for everything to work as well. I Highly recommend Ernie, you’ll be happy you hired him.

Cal is just amazing and definitely one of a kind business as in service quality and professionalism.

I was first introduced to cals back in 2004 when I bought my home in Derry. He has never failed me at anything! From installation of my furnace, not one ac units but two over the years. He continues to reach out with a call to make sure I don't have any further questions after his work.

He is polite, kind and straight shooter as in professionalism and quality of his work and clean up afterwards. He has always quickly responded to any and all service questions and conducted repairs immediately. Not many like him and his crew left in the world. Just amazing

I highly recommend him and his services and WILL ALWAYS use his company.

Just had a great experience with Ernie and George. They just replaced our furnace because it was on it's last legs. He was able to get to us right away because my Mom was having a problem with the cold. Was very quick replacing it and was great with the price especially when everyone else we called were much higher on their price with a much longer time line to replace it with. Couldn't have gone any smoother. I would highly recommend Ernie and Cal's they're very good and caring and tells with his quality of work.

Highly recommend without reservation. Cal’s is a top notch, reliable business with expert level techs.

I had the pleasure of the owner (Ernie) servicing our equipment (both AC and heat). He was patient, diagnosed and trouble shot the problem, - all while being patient and explaining the technical issues in layman’s terms. The prices are very fair and reasonable, and are conveyed in quick turn without surprises.

We recently had our ACs go out one hour before a house full of guests arrived. I texted Ernie in a panic and he was at my house in 30 minutes and fixed the issue within 30 minutes. Grateful, doesn’t even come close to explaining it.

This type of customer service and high technical skill is rare nowadays. This business is exceptional.

We first called on Cal’s, a few years ago, when our AC was only blowing hot air. I was expecting a huge cost to repair. Cal’s promptly arrived and quickly determined is was a blown capacitor. In and out for about $100 when I was anticipating several hundred. Fast forward to last Thursday. We had decided to upgrade our AC to a three zone mini split, and a new more efficient condenser for the high velocity system we use for the second floor. In our minds, there was only ONE company to call. Cal’s came out with less than a two week lead time to get on their schedule. They performed the work in less than 5 hours. Right now we are sitting in our house, nice and cool, while it’s 93 degrees outside. One of our dogs was so cool, her nose was running! We have found, through our experience, that Cal’s is a very trustworthy, honest, prompt company with reasonable prices and expert service and installation.

Cal saved us! It's supposed to be 100 degrees tomorrow which would be rough with no A/C. Cal quickly diagnosed the problems, had all the tools + electrical supplies + replacement parts in his tool bag and/or van (so no trips to the warehouse & back), and expertly implemented a fix. We can't thank Cal enough & would heartily recommend his service to anyone. Another important detail is that other services were booking 2+ weeks out. Cal was able to get us up & running fast. 5 stars!

I have used Kingdom cooling several more times satisfactorily since my review below. A+++++
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I am a property manager and have used many HVAC technicians over the years. Gerry of Kingdom Heating & Cooling is one of the most dependable. He responded to a No Heat call after dark on a Friday. Correctly diagnosed the issue and even picked up the part personally from a supplier over twenty miles away. Thank you Gerry.

Gerry was very professional and very nice. Did a great job servicing our oil heating system. Price was great and service was great! Will be our annual guy now and also will call if any problems arise before next years maintenance.

I hired Gerry Mafera of Kingdow Cooling )the owner). He installed 2 mini split systems for me. His worker damaged my wall by dropping tools from the attic
He also rarely cleans the ed up after himself
However I had issues with him filling out the rebate form properly resulting in my not getting my rebate
The state requires the installer to provide a detailsof the invoice with model numbers and rating
They also require a certificate for the AHRI rating. He did not provide that. After less than 24 hours after they completed the job, one if my units had an issue with one unit not draining outside and he wanted to charge me a service call. I will not use him again.

Gerry was great. Called me before he showed up (on time !) and wearing a mask. Did a great job and explained everything and showed me pictures with his phone of what he did. Also did a repair that got a bit involved and explained everything. Took the time to go over options and will come back soon to finish the repair. And even fixed my pellet stove too. Willing to go the extra mile and he's the most important thing you need in a contractor. Reliability ! Answers quickly and shows up when he says and even calls when he thinks he'll be late.
Highly recommend.

We had Kingdom Cooling install a heat pump system in a 100+ year old home. There were many architectural challenges. Gerry provided a very space efficient installation that worked for our home. He is very professional and pays great attention to detail. We are extremely happy with his services and would definitely recommend.

These guys are terrific. They work well together and are responsive to the needs at hand. We bought an off brand mini-split & we needed professional installation and had a hard time finding someone who would be willing to put in a system that wasn’t purchased through their HvAC company. Not only did Kingdom Cooling respond quickly, they took the time to learn how to do the installation-as it was different than the typical install and they still managed to stay within our budget, even working late one night. I would recommend them to anyone needing a responsive and knowledgeable team. They know their stuff and will make sure it is done correctly.

Amazing price and an even better install. Gerry and his guys replaced a 4 ton system for us and I couldn't be more pleased. We have a one year old and they made sure to be quite during his nap times. Our little guy didn't miss a minute of sleep. Thanks guys, for everything!

Gerry and his team did an outstanding job! Very professional and great to work with! I had a mini split system installed. It keep the house cool the entire summer. The system is fantastic. I was provided with status updates at the end of each day. I highly recommend Kingdom Cooling!

We were extremely pleased with the service provided by Derry Plumbing, Heating & Cooling. Their team demonstrated exceptional professionalism—honest, punctual, and dedicated to completing the work efficiently and correctly. We required immediate work on our boiler system, and the work was completed in a timely manner. We highly recommend Derry Plumbing, Heating & Cooling for their reliability and quality workmanship.

Service Technicians, Duvall and Ethan, were prompt, polite, professional, and helpful in resolving the issue with my water softener. They also wrote up my paperwork accurately.

The only suggestion I have for Derry Plumbing and Heating is to require your service technicians to put on waterproof shoe/boot covers when arriving into a customer's home. That way the techs don't track in water, ice, pebbles, etc. onto a customer's flooring.

This is especially helpful during the winter months with snow/ice/rock salt on walkways/driveways. Also good during the rainy spring season. Thank you!

We had the pleasure of working with Eric and Shawn today, to fix some piping leading to our outdoor hose.
They were friendly, diligent, and super clean!
We have always had great experiences with Derry Plumbing, and they certainly did not let us down.
Thank you, guys!!

I wish I could give this company TEN stars, they are PHENOMINAL! Recently, we were without heat for 7 days in negative degree weather. Our oil company did not want to deliver oil because they thought our tank was compromised. This caused a burst water pipe, which we hired Derry Plumbing and Heating to repair. They promptly came out and fixed the pipe. While we had no oil, they returned with some diesel and got our furnace up and running again. Working with the owner, Dave, he clearly cared and was concerned we were without heat for so long. He stepped in and worked directly with our oil company to ensure we got a fill. Just today, Adam from DPH came out to get the last of our hot water baseboards up and running. He took the time to teach me how to inspect the baseboards, showing me exactly where to feel for heat to ensure they were working correctly. I cannot give higher praise to Dave and his team for going above and beyond helping us in this crisis. Each person we worked with was professional, friendly, and very good at what they do. Thank you for the care and service you provided us.

I had Eric and Shawn come out and work on my bathroom for an emergency leak. They were quick, professional, and personable with resolving my problem. I would recommend Derry Plumbing and Heating if you have any issues with the your plumbing or HVAC