My Family's Experience with “Six” HVAC
“Fool me once, shame on me.”
“Fool me twice, shame on Six.”
I am writing this from our home in Hamilton, NJ to prevent any other family from enduring the financial and emotional distress we have suffered since 2022. If you are considering hiring “Six” for your heating or cooling needs in Princeton, Hamilton, Lawrenceville, Robbinsville, or anywhere in Mercer County, please read our story first.
The Six HVAC sticker placed on our unit — the same unit that is now dead.
The Track Record: A Trail of Damage
Three years. Multiple disasters. Nearly $15,000 spent. Zero accountability.
He managed to flood both my basement and my attic. Yes, really.
The Flooded Basement — $4,900 Pump Replacement
After charging $4,900 to replace a baseboard heater pump at our newly purchased Hamilton, NJ home, Six left only for us to find our basement completely flooded later that same night. The cause? A misaligned gasket he failed to check by properly testing the system. This was the first night my family was visiting our new home.
It took days to dry out the basement, hours to suck up the water a shop vac. Countless items from our move were ruined.
He had to come back twice — once to replace a zone valve that then failed immediately after the pump was replaced, and again to fix another issue that he blamed on the wiring to the just-then-replaced zone valve.
The Destroyed Nursery — $10,000 AC Replacement
We made the mistake of giving him a second chance for a full AC replacement ($10,000). During the install, he broke the electrical in our bedroom closets (which still don't work to this day). He also broke the ladder to our attic, which I had to buy parts for and replace myself. It was left tied together with an old wire.
He left claiming the system worked — it shut off and would not restart multiple times. Multiple visits required again.
The day after that, water poured from the ceiling of our newly refinished nursery. The ceiling, carpets, and lighting fixtures were destroyed. Her custom wall mural was ruined. Hand-made blankets and crib decorations — gifts that had been unpacked into her room just days earlier — were destroyed. My daughter was less than 3 weeks old.
At no point did Six want to hear about the items that were destroyed or offer any form of compensation. Hundreds of dollars of personal belongings were ruined by the water damage.
The Disappearing Act
When water started pouring down the walls, from the attic stairs, and through the ceiling light fixtures, I called the emergency line Six himself provided me during the first flood. His wife answered. She told me it wasn't an emergency and sent me unsolicited photos of Six in a hospital bed hooked up to IVs. It was extremely uncomfortable and completely inappropriate. I will not share those photos out of respect for his privacy, but it does not change the fact that my home was being destroyed by his work.
After begging her to send someone, they finally sent another HVAC technician in a different company van 2 days later. He took one look at the system and called the entire install a “disaster.” He spent the day fixing basic errors — backward check valves, incorrect wiring on sensors for the drip tray, fan speeds set wrong, blowing condensation into pools that filled and overflowed in sudden giant deluges. The entire tray was misaligned and overflowing. It interfered with the attic stairs mechanism- but because he destroyed that, there was no way to know. Everything needed to be redone.
It took months of chasing Six — calling, texting, begging him to come back — while our daughter was forced out of her nursery. And when the repair finally happened, it was not a simple fix. The ceiling, walls, sheetrock, paint, moulding all had to be redone.
He was supposed to return after a few days of the initial install with the warranty information, a final itemized install invoice, and an efficiency report for the new system. He was supposed to explain why I did not get the concrete laid for the A/C unit outside he promised — and how that exact cost was sunk somewhere else in the project, so no savings were realized. He also promised a 1-year complimentary checkup “included” with the install. None of that ever happened.
Everything disappeared with him.
The Situation Right Now
- It is 88ºF degrees outside today.
- The thermostat is dead.
- The boiler was stuck cycling on.
- Our 2 y/o $10,000 AC unit is completely non-functional.
- Six is still nowhere to be found since the last incident. I've only seen his repair crews since the initial install and handing him a check.
- His website, phone number, email, Google presence are all still active.
- He is not answering calls or texts.
- He has failed to provide any receipt or warranty documentation for the equipment we paid for.
- The morning after the boiler was stuck on, we noticed a heat rash on our two-year-old that warranted a telehealth call with our pediatrician. Her crib was positioned next to a baseboard heater that was supposed to be inactive.
Six Finally Answered - REFUSED To Help In Any Way.
Six was finally reached by phone. He acknowledged he never provided any of my paperwork — no warranty documents, no itemized bill, no efficiency report. He said his business is “basically closed” — despite it still being listed as active online — and that there was absolutely nothing he would do.
I asked if that was really how he wanted to handle and end this. He said yes. I hung up.
That was my final attempt to contact him to do the right thing. I have no intention of calling him again or wasting any more time at this point. This warning to my neighbors and a formal complaint to the NJ Department of Consumer Affairs is all I can do.
Having to Pay Someone Else to Fix What He Won't
I was able to verify my warranty by contacting the manufacturer and crawling into the attic to find the serial numbers on the equipment myself. They provided the contact information for a different qualified professional who could help.
Before arriving, this new technician gave me an estimate, a time frame, and a full breakdown of my warranty coverage across the different parts of the system — what Six never provided.
The diagnosis: Wiring issue caused by the original install. Wiring Six specifically replaced during the install of a thermostat I didn't want because Six said he couldn't install a Nest. I paid this technician for their labor.
We're Not the Only Ones
Other customers have shared similar experiences with Six HVAC in Princeton, NJ.
Missy M.
“Shoddy work. Overpriced. Keep him away from your home. Six had to return repeatedly to fix my new furnace because he didn't bother to check why it had stopped running the first time, though he was the one who installed it. He just started it up again and left, even though that shouldn't happen with a brand new furnace. … He overcharged me and tried to charge me double for something that is legally covered because it was his own work. I've had to find a competent professional to fix it. Learn from my mistake. Don't call Six.”
Rebecca B.
“Six has a really high number of 5 star reviews, but some of those are identical to each other. … He pads his prices and fudges the value you're getting. He also flat out charged me for something that should be covered under his own warranty. He lied to me multiple times to avoid work. He installed a whole new system — heat pump, oil furnace, electrostatic air filter, bypass humidifier. He had to come back repeatedly to get the system to work.”
David S.
“Horrible service. Made us overpay. Unit is still not performing as designed. Totally unprofessional and unprepared.”
Reviews sourced from public Yelp and Google listings for Six HVAC, Princeton, NJ.
Six HVAC — Princeton, NJ
300 Carnegie Center Dr, Princeton, NJ 08540
A Warning to Homeowners Across Mercer County
Six HVAC operates out of Princeton, NJ but services homes throughout the region. If you live in any of these areas, be aware before hiring.
This is not an exhaustive list. Six HVAC advertises service across all of Mercer County and surrounding areas.
The Bottom Line
“I am currently sitting in a sweltering house with two children under the age of two because I trusted this man. He is expensive, his work is dangerously negligent, and he does not stand behind his installs.”
For the sake of your home and your family's safety, please stay far away from Six HVAC.
If you have had a similar experience with Six HVAC in Princeton, Hamilton, Lawrenceville, Robbinsville, or anywhere in Mercer County, you are not alone.