O'NEILL Contracting

Our preventative maintenance agreements ensure optimal HVAC performance through seasonal inspections and tune-ups. Technicians check electrical connections, lubricate components, clean coils, and verify refrigerant levels to prevent breakdowns. Regular maintenance extends equipment lifespan while maintaining energy efficiency, with members receiving discounted service rates and priority scheduling.

We provide urgent HVAC repair solutions through our 24/7 emergency hotline. Certified technicians diagnose and fix critical heating and cooling failures using specialized diagnostic tools. Our rapid response team carries common replacement parts to resolve most issues during the initial visit, minimizing system downtime during extreme weather conditions.

Our installation service includes free in-home consultations to determine optimal HVAC solutions. We specialize in high-efficiency furnaces, mini-split systems, and air purifiers with proper sizing calculations for each property. Technicians handle complete system replacements including ductwork modifications and thermostat integration, ensuring seamless operation with manufacturer warranty protection.

We improve residential air quality through whole-house humidifiers, dehumidifiers, and advanced purification systems. Our technicians install REME Halo purifiers and IWave-R units that reduce allergens and pathogens. Energy recovery ventilators maintain fresh air circulation without compromising temperature control, creating healthier living environments for allergy sufferers.

Fujitsu XLTH mini-split installations provide efficient zoned temperature control without ductwork. Our technicians design custom configurations for single rooms or whole homes, including outdoor condenser placement and indoor unit mounting. These systems operate effectively in extreme cold down to -15F, offering energy savings compared to traditional window units.

We provide complete HVAC solutions including maintenance, repairs, installations, air quality improvements, and emergency services for residential properties.

Yes, we have a 24-hour service hotline for emergency heating and cooling repairs.

Yes, we offer financing options to help homeowners manage HVAC replacement and installation costs.

We serve all of Bergen County, New Jersey with prompt HVAC solutions.

Yes, we offer free consultations and equipment replacement quotes for all HVAC projects.

Our plans feature discounted service calls, 20% off repairs, and seasonal system check-ups to maintain efficiency.

Do not use them! These people are scams. We hired them to service the furnace. They just opened it, looked at it and said everything is fine. They don't even change the filters because quoting him "I didn't bring in any filter because we don't know what system you have!". We also paid for the service for the humidifier, they did not do anything about it, and the technician lied to us saying that we have a brand new filter and there is no need to change.

After he left, I checked and it is not true, the system has all the calcium built from last year. He simply didn't check at all. And btw, they take your money at the time when you make the appointment. You cannot do anything about it because your money is already gone before they come to your house.

We gave O'Neill over $13,000 in business this year, replacing two split system air conditioners and a furnace. They did a good job on the installation, but when we had some issues after the install, the service department never returned any of our calls. And we had even paid O'Neill for a service contract! (totally thrown out money.) I'm sorry to say that we will never hire O'Neill again.

Critical: Quality DO NOT USE O'NEILL! They install systems that they know won't work and they have no solutions when you call them back to fix it. They are terrible at HVAC system design and installation. STAY AWAY FROM O'NEILL! Services: Install AC, Heating system installation, HVAC duct & vent installation

O'Neill Contracting is a stellar operation. O'Neill installed my furnace when I went from oil to gas and I found them to be a professional first class Business. I maintain a service contract with them for all my heating needs. I had them replace my water heater this year and marveled over the workmanship and efficiency. They are a 10 Star Operation.

I live in Bergenfield and had heard of Oneill a lot, but I hesitated in calling them afraid that it was going to be too expensive. I was perhaps one of the last home owner around still using oil fuel to heat the home I had looked forward to a "conversion" of my old furnace into a gas furnace. I finally Called them just before Christmas day, a man name Anthony arrived and it took him a few minutes to give me an estimate for a new furnace and the possibility to have AC as well with the same furnace!.

On the day after Christmas, 4 workers arrived on schedule at 8 am and by lunch time the work was done!. The entire new furnace is powerful and the high tech digital thermostat that came with it, changed our lives forever. Is day and night the difference between oil fuel and gas heat. The house is warmer without even touching the thermostat. They charged me less than $5,000 for the entire job, when everyone else estimated it from $800 to $10,000

They sent 3 different technicians and everyone said different things and last one who came said something totally wrong and made me waste time and money and ended up not fixing it. When I called the company and complained receptionist said she has nothing to do with it and next available date is almost 3 weeks from now.

I don't typically do reviews, but I was in a bind today and the company I typically use did not respond to my call and my house was freezing. Even though the fix itself took 5 minutes, they came in 40 minutes on a Sunday!