Carrier Dual-Fuel HVAC Installation in San Mateo
We spent a full day in San Mateo this week completing a Carrier dual-fuel HVAC installation for a 3-ton system. Dual-fuel means the home now runs a gas furnace and a heat pump as one team, switching automatically depending on outdoor temperature. It’s a setup we like recommending around San Mateo because it keeps gas use low on mild days and still delivers full furnace heat when a cold snap rolls through.
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What Was Replaced and Installed
The old furnace, evaporator coil, and outdoor AC unit at this San Mateo home had reached the point where they needed a full swap, not another repair. We removed and disposed of all three, then installed a new Carrier 59TP6C060V17 high-efficiency two-stage gas furnace, rated at 96% AFUE with a variable-speed blower for quieter, more even airflow. Paired with it is a Carrier 37MURA36AA3 3-ton inverter heat pump running on R-454B refrigerant, plus a matching Carrier CAAMP3617AMA 3-ton aluminum evaporator coil with a factory-installed TXV. Together they form the complete dual-fuel system, letting the heat pump handle most of the heating and cooling efficiently while the furnace steps in only when it’s the smarter choice to burn gas instead of running the compressor hard.
The Install Day and What’s Included
Getting a dual-fuel system tied in properly took reconnecting and modifying the existing supply and return plenums, plus hooking up gas, vent, condensate drain, electrical, thermostat, and refrigerant line connections. We also added a new filter box built for easy, convenient filter replacement down the road. Before startup, the refrigerant lines went through nitrogen pressure testing and evacuation, then we charged the system, commissioned it, and ran a full setup and check.
We finished by installing a smart thermostat so the homeowner can control both the furnace and heat pump sides of the system from one place, with the switchover handled automatically in the background.
The new equipment carries a 10-year manufacturer warranty on parts, and we’re backing the installation with a 3-year labor warranty. We’ll also register the equipment with Carrier within two weeks of installation so the homeowner has full warranty coverage on file.
If your current furnace or heat pump is on its last legs, a dual-fuel setup is worth a look — it’s one of the more practical upgrades we install for homes in San Mateo and the surrounding area.
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Reviews
Trusted by your neighbors
“Nur HVAC recently installed a heat pump (so we could finally have cool air during the summer!) and a new furnace since we still prefer to heat with gas. I could not be more pleased. I obtained estimates from 3 companies, including Nur. One was the Costco installer. They were nice but very expensive and didn't have the greatest post-install reviews. Still, I considered them. Another company provided what seemed like a pitch for a time share, complete with an album showing their reviews. This lasted close to 20 minutes! Nice company but out of the ballpark on price (maybe the presentation was intended to make you forget the final price?) and the estimate ran multiple pages which made comparing options impossible. Then came Artur with Nur HVAC. He was prompt, provided an easy to read, no nonsense estimate comparing options and did not try to upsell me by actually recommending less expensive options. They also had the best price no matter what we went with. The team which did the install was efficient, prompt, did solid work and were extremely polite. The job was so well done that when the city inspector came by for the final sign off, he was impressed by the work and told me that he has never had a problem with Nur. He explained how others take short cuts and how he is able to spot the problems. He told me Nur HVAC was one of only a handful of companies that always passed inspection as the installs were safe and properly done. I could not praise Artur and his team more! You will not find a more polite, professional and hardworking company that provides such great value for the money.”
“Great service twice now from Islam D! I have 2 small children and both times they've gone above and beyond to help me get heat going as quickly as possible. First time the motherboard went out on my furnace and Islam had an old one with him that he was able to quickly install while we waited for new replacement under warranty as unit is under 3 years old. Came back once he had new one and swapped them out again. This most recent time Islam came after hours and I can only imagine after an already long day to make sure he was able to help us as of course it had been our coldest days of the winter. We went to furnace and he checked everything to find nothing actually wrong. He decided to switch up wiring to thermostat as only 2 of the 5 wires available were being used and thankfully that worked. Even came out of it being able to now use the "fan" function on furnace. As long as Islam works for Nur HVAC, I will not being calling anyone but him!”
“Needed to replace my old heater furnace before the winter season and requested quotes from several different contractors. NUR HVAC responded quickly and provided a very reasonable cost estimate compared to some of the others. A two man crew came out the next day and finished the install within a day. There was a minor issue when I initially tested the system, but David immediately came back over to troubleshoot and fix it, and it now works perfectly. Overall, I had a very positive experience with David and what really stood out was how much he cared about the quality of work. I'll be going with him for all future HVAC needs (maintenance, servicing, repairs, etc..) and would highly recommend NUR HVAC to others as well.”
Google Reviews
What our customers say on Google
“I highly recommend Nur HVAC! They upgraded my old split furnace HVAC with a heat pump HVAC retrofit. Fedor and the installation team showed outstanding professionalism and craftsmanship in all phases of the project: * Detailed initial project scoping tailored to my home's needs * Fast, friendly communication from start to finish * Solved new complexities we encountered on site * Collaboratively discussed alternative solutions, never felt pushy * High work quality I would absolutely choose Nur again for future HVAC work.”
“NUR HVAC definitely delivered on its promise of a new furnace. The technician, Adlan, was a true professional knowledgeable of his craft, extremely neat & organized with a very pleasant demeanor. The home office was equally prompt on informing me of the progress and quickly addressed any issues I may have. I definitely will be calling them soon for the installation of my AC. Suffice to say, I hope I will be interacting again with Fedor and Adlan. Thank you for a job well done!”
“My evperience with Nur Hvac was a pleasant one. Fedor was very accommodating and cooperative! The crew was very efficient and clean. I am glad I chose this company!”
“I was impressed from the beginning with getting a quote from Fedor, he went thru in detail what's needed, what he would recommend, going over pros and cons. We have decided to go with central Mitsubishi heat pump. Work was done by Volodymyr/Ryan. Two worked efficiently and quickly. Work was completed in 3.5 days. What I liked was, they meticulously cleaned up each and every day before they left. Truly amazing. I would 100% recommend Nur HVAC.”
“It is no coincidence that Nur HVAC has such positive reviews. This team is just as good as all of the reviews say. We had them upgrade our old gas furnace and gas water heater to heat pump units and I can say hands down that this was the most positive home improvement / construction project we've done. Fedor coordinated our project and was consistently responsive and helpful. He went above and beyond to make sure we got the equipment I wanted. Vladimir and Arthur performed most of the install and it went super smoothly and the equipment works perfectly. They were always courteous and communicative. We had one issue related to very high water pressure from the street and even though this wasnt their fault, Nur HVAC prioritized helping us solve the problem over the holidays. I could not recommend this team more.”
“Nur HVAC replaced my old gas furnace and replaced it with a Mitsubishi heat pump. They also redid my ducts. David initially came to my house to give me a quote, he offered me a ductless option which no other HVAC companies suggested, and was clearly experienced in HVAC installation, and gave me the best quote for top of the line equipment. Other HVAC companies sent salespeople, but David was technical and addressed my concerns and questions with great detail. The team that installed my new heat pump went above and beyond - they fixed some loose wiring in the crawlspace and adjusted the gas and exhaust lines for my water heater to save space. The installation was well done, the wiring and new lines they ran were clean and organized, they ensured that all the ducts were sealed and the airflow was balanced to all my rooms. I'm very happy with my new hvac system and would highly recommend Nur HVAC!”
“We recently hired Nur HVAC, from a friend’s recommendation, to install a new heat pump and AC unit, and we couldn’t be more satisfied with the entire process. The installation was done on time and with great attention to detail by Ildar and Andrei. So far, the new heat pump and AC unit are working flawlessly. Our home is more comfortable than ever. The Mitsubishi unit runs quietly and efficiently. If you’re looking for a reliable, honest HVAC company that delivers high-quality work, we highly recommend Nur HVAC!”
“I’ve been using NUR HVAC for the last two years, first at my former house and now at my new one. Every experience has been excellent. Their technicians are fast, courteous, and truly attentive. They take the time to identify the issue, explain what’s going on, and fix it with ease. Most recently, Adlan installed a new Ecobee thermostat for me, and once again the attention to detail and willingness to walk me through how to use it made everything simple. I couldn’t ask for better service. I highly recommend NUR HVAC to anyone looking for reliable, professional, and easy to work with technicians.”
“I’m very pleased with Nur HVAC. I have an older AC unit, and Islam was able to successfully repair it while clearly explaining the work and showing me the before-and-after measurements so I could understand the difference. He also patiently answered all my questions. I am very satisfied with the service.”
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