All reviews for Miller's Heating & Air Conditioning

Milliers Heating and Cooling was extremely professional from start to finish. Brad was very helpful and knowledgeable, took the time to explain everything clearly, and explain the different products they had to offer. The team that came out made sure the job was done right and kept us updated with everything they were doing. Their pricing was fair and transparent. Had an old oil boiler, A/C and air handler replaced with a water heater, updated A/C, and heat pump. It’s clear they know their work and take pride in what they do. I would definitely recommend Milliers Heating and Cooling to anyone looking for reliable, honest, and high-quality service.

Hired Miller’s to remove our old oil furnace, install a hot water heater, and replace the hvac system including ductwork. The techs removed the oil’s furnace and installed the hot water heater on Wednesday. In the process our garage had gotten flooded. My husband managed to remove most of the water but some items and furniture got wet. We still don’t have hot water also, it’s been almost 48 hrs since the install. Currently waiting for a call back from the office about getting a service technician. At the beginning of this process, I had high hopes within 12 hours of discovering that our furnace had to be replaced, we had a signed agreement for a completely new system. Now 9 days later, I still don’t have hot water and heat.
Update:
Millers sent out a tech the same day I called, the tech, TJ replaced the thermostat and heating elements that were damaged in the hot water heater when it was installed.
This week, Miller’s sent two installers, Everett and Philip, for the hvac/ duct replacement. They are such a great team and made sure the install was a flawless experience. Philip even made a point to introduce himself to our dog, it helped calm our dog for remaining install days. Everett turned installing duct work into an art form. Beautiful work!

I recently had four outlets replaced due to age, and I was pleased with the quality of the work. However, when scheduling the appointment, the service request didn’t clearly prompt for specific materials like an outlet cover or an extra outlet—both of which I forgot to purchase beforehand. As a result, the electrician arrived without the necessary items.

To improve this process, I suggest enhancing the information-gathering step during scheduling. Ensuring staff ask detailed questions about the required materials would help technicians arrive fully prepared and avoid disruptions. That way, time isn't wasted on-site, and the crew can remain efficient and focused on serving more customers.

I just got an AC and furnace install. There wasn’t really any personal service. The only person I consistently spoke with was a scheduler but they weren’t up to speed on the technical aspects of the install.

I was the quality assurance for the project (some things were mis-wired, the system shut down after a couple weeks due to drainage, had to ask if the roof work was completed, they missed a service window by half a day). I asked for a call from the installation manager and another manager but received none snd they won’t give out their phone numbers. I think we had a total of seven visits over six weeks (install, trim work, duct work, re-work) requiring us to take time off from work (one of which they were 6 hours late for).
Most of the technicians who came to our house were terrific. Many explained what they were doing or had done. In some cases I wasn’t sure the status of the work they came to do. I felt like I was doing some of the project management and quality assurance.
I can’t speak to the quality of work since we just had our last visit and the hot season has passed. I’ll update after awhile.

This is the THIRD issue we have had since the installation (August 2025–December 2025)
1. August: Condensation drain lines were disconnected (presumably to remove the old system) and not re-connected during replacement. My husband fixed this himself (to my annoyance) when he discovered water pooling on our laundry room floor. I felt we should have called the company back out.
2. October: No heat available. Apparently there was a “wiring issue” and AC was provided when heat was called for. This happened when our baby was 5 DAYS OLD (around 10/20) and had just come home from the hospital, at the first cold weather in October. I felt the room getting colder rather than warmer and chilled air coming through the vents, despite being on heat setting. No error messages provided through thermostat, but the temperature readout confirmed the room was getting cooler while running.
3. December: No heat available, aux heat not available. I was up with the baby for a middle-of-the-night feed with our now 7 WEEK OLD baby, and upon returning upstairs realized how cold our room felt. I checked the thermostat and found the room at 57 degrees along with two error messages on the thermostat.

I called the service line and was assigned an appointment for Wednesday afternoon by the AI receptionist (it’s Tuesday 4am). This is too late, and not appropriate for an infant sleeping in these rooms. With the cold temperatures I do not expect the house to warm up significantly during daytime. We also have my mother-in-law and her sister visiting!

We spent $18,000 on a brand new system in August, which has obviously not performed the way it should. It concerns me that the first two errors were incorrect installation--missed at installation and final check over (if performed at all).

I would not expect to have this third issue on a brand new system, *especially* after having things looked over more thoroughly in late October.

While weighing our options to repair or replace in August, we made the decision to replace our aging HVAC system SPECIFICALLY because we had a baby on the way. Unfortunately, our $18,000 investment hasn’t saved us the worry that our system won’t completely fail us when we need it the most.

I am at the point where I have lost confidence in the service and product Miller’s provided, and even prompt service and correction at this point (understandably so) won’t redeem the way I feel about our overall experience.

-Maureen Kane-L’Heureux

Prior to having our new HVAC unit installed on 10/23/25 we thought Millers was going to be a great choice. Our new unit did not work from day 1. The night it was installed alarms started going off at 3am indicating there was an issue. We contacted Millers and twice they came out it was determined that we needed a new part which was going to take over two weeks to get to them. It’s now been over a month since they installed a very expensive and ultimately broken system. The part they needed should have been in to them on 11/28. We had to reach out to them on 12/1 to get the status which due to phone tag we still do not know when they plan to fix our system. There have been several very cold nights, getting down into the 50s inside our house. We have two small children and Millers has done absolutely nothing to make this right. We are extremely frustrated, disappointed, and cold. I could not recommend Millers less.

I chose millers to replace my 5 ton Geothermal unit in my house. I placed this order on 1/20/2026 and as of today (3/2)my unit is not up and running. It’s been a cold 45 days in my house and the team has shorted out 3 transfer panels attempting and install and just realized the panel and unit don’t properly communicate. The communication has been poor from the office about replacement parts and when our next appointment will be. My wife and I are beyond frustrated. I have called in 3x over the past week requesting to speak with a supervisor and nobody has called me back. For a job that costs the price of a car, I would expect overall better service and my HVAC to actually work. I am so frustrated that I am entertaining having another vendor finish the install even if it voids the warranty in some way.

Everything was great until install day on Feb 7th. 1st of all the ladies in the office is wonderful. Very polite and understanding of my issues. Once installed I was told my thermostat wasn’t compatible so I had to go out & spend $200 on a new thermostat. Then was told the new system didn’t have enough freon & they didn’t have any on the truck, so we didn’t have heat for two days. After everything was set up on Monday & I received the warranty info I noticed I didn’t receive the system I thought I picked & that the 1 they installed is considered too small for my house. (Something they should have known) I called on Tuesday the 10th with my issues/concerns & was told someone would call me within 24 hours. After not receiving a call by Thursday the 12th (48 hours later) I once again called & was told Eric would call me within the hour. I then called again Friday the 13th (24 hours later) because I was still waiting on a call from Eric. Needless to say I’m still waiting. As I’ve told the office staff at this point all I want is for them to come and take their system back! I’d rather be cold than to do business with Millers! This truly has been a horrible experience for me & my family. All I want from them is to end our contract & come that their system out of my home so we both can move on.