
Balance
Comfort
Reliability
Innovation


Comfort. Reliability. Innovation.

Years of HVAC Excellence in Northern NJ
Satisfied Homeowners & Businesses
5-Star Google Reviews - Local Favorite
Proudly Serving Dumont & Bergen County Communities
Dumont families and businesses have trusted Advanced Mechanical Services for reliable heating, air conditioning, and air quality solutions for over four decades.
Our family-owned company operates from nearby Ridgefield at 350 Broad Ave, bringing NATE-certified expertise to every service call.
With 1,894+ successful installations, 954+ systems under maintenance, and a 98% customer satisfaction rate, we've built our reputation on quality work, 24/7 emergency response, and financing options that fit your budget.
The right choice comes down to experience, reliability, and results you can trust.
Jack Mulligan and Elaine Costa built this business in 1985 on straightforward service and quality work. Forty years serving Bergen County means we've handled every heating and cooling challenge Dumont properties face, from summer heat waves to winter cold snaps.
All 10+ of our technicians hold NATE certification and stay updated on the latest heating and air conditioning technology. They're licensed, insured, and approach every job with the same care they'd want for their own homes.
Air conditioning doesn't fail on schedule. Neither does your furnace. We're available around the clock for emergency heating and cooling repairs. Most installations wrap up in 1 to 2 days, and our crews arrive on time, work clean, and finish the job right.
You'll never see hidden fees on our invoices. Every job starts with a free 30-minute consultation and detailed written estimate. With financing programs and rebates from $100 to $2,500, professional HVAC service fits any budget.
We've earned 95+ five-star Google reviews and maintain a 98% satisfaction rate by delivering what we promise. Our team doesn't just finish jobs. We make sure you're completely satisfied with the outcome.

From installation to repair and maintenance, we handle all your heating, cooling, and air quality needs.

We work with all major brands and offer same-day emergency service when your AC fails during Dumont's hottest days.
Central Air Conditioner Installation & Replacement
Mitsubishi Ductless AC Systems
AC Repair & Maintenance
Dual Fuel System Installation
Zone Control Systems

Professional air quality services remove allergens, control moisture, and keep the air in your home cleaner and healthier.
Air Duct Cleaning & Testing
Air Filtration & Purification Systems
Humidifiers & Dehumidifiers
UV Germicidal Lights
Heat & Energy Recovery Ventilators
Whether you run a small shop or manage a large commercial building in Dumont, our licensed team delivers reliable, code-compliant heating and cooling solutions.
Commercial HVAC Installation & Replacement
Chiller Services for All Sizes
Preventive Maintenance Programs
Emergency Commercial Repair
Rooftop Unit Service
Building Automation Systems

Every heating installation includes warranty protection. We specialize in Coleman® systems, America's only fully domestically assembled HVAC equipment, with our exclusive 10-year parts and labor warranty.
Furnace Installation, Repair & Replacement
Boiler Services
Heat Pump Systems
Radiant Heating Systems
Ductless Heating Systems
Emergency Heating Repair
Hot, humid summers and freezing winters mean your heating and cooling equipment works hard all year.
Summer temperatures in Dumont climb into the upper 80s and 90s with thick humidity. We size every air conditioning system based on your property's exact cooling needs, so your AC handles peak heat efficiently.
January brings temperatures down to the low 20s. Your furnace or boiler keeps your family safe and comfortable. For Dumont homes, we often recommend heat pumps with gas backup for the best efficiency during mild weather and reliable heat during bitter cold.
Four seasons of heating and cooling use add up fast. We install high-efficiency equipment that cuts energy waste while maintaining comfort. That means lower monthly bills without sacrificing performance.
The quality of installation directly affects how well your system runs, how long it lasts, and how often it breaks down. Our NATE-certified technicians follow all local codes and manufacturer requirements on every job.
Spotting problems early saves you from expensive emergency repairs and uncomfortable nights.
The heating or AC runs but doesn't reach the temperature you set. Some rooms feel warmer or cooler than others. Your thermostat reads one temperature but it feels different. Your heat pump or air conditioner freezes up. Your furnace keeps turning on and off repeatedly.
Strange grinding, squealing, or banging noises when your system runs. More vibration than usual. Odd smells when your heating or cooling kicks on. Hissing sounds that could mean gas or refrigerant leaks.
Energy costs jumped without any change in how much you use your system. The equipment runs constantly but struggles to heat or cool. Your furnace or AC is over 10 years old and needs frequent repairs. You see rust, moisture, or corrosion on the equipment.
Your pilot light burns yellow instead of blue. That means possible carbon monoxide. Breakers trip every time your heating or air conditioning runs. The outdoor unit looks damaged. Ice forms on the refrigerant lines.
Call us for accurate diagnosis and honest advice about whether repair or replacement makes more sense.
Answers to common questions about heating, cooling, and air conditioning service.
A: Look for proper licensing, insurance, NATE certification, and proven customer satisfaction. We've served Dumont and Bergen County for 40+ years with 95+ five-star reviews, NATE-certified technicians, and a 98% satisfaction rate.
A: Costs depend on equipment type and property size. Furnaces typically cost $3,500 to $8,000, central AC runs $3,000 to $7,000. We provide free consultations with transparent estimates, plus rebates worth $100 to $2,500 and financing options.
A: Yes. We provide 24/7 emergency heating and air conditioning service throughout Dumont and Bergen County. Call (201) 886-2900 anytime for immediate help.
A: Twice yearly works best. Get your air conditioning tuned up in spring and your heating system inspected in fall. Our $15.95/month maintenance plan includes annual inspection, cleaning, priority service, 15% off all work, and no overtime fees.
A: We install and service all major brands including Coleman, Carrier, Trane, Lennox, Rheem, Goodman, and York. Coleman® systems include our exclusive 10-year parts and labor warranty.
A: Yes. Modern heat pumps work well in Dumont, especially dual-fuel systems with gas backup. You get efficient heating and cooling most of the year, with automatic switching to gas during extreme cold.
A: Most installations take 1 to 2 days. Simple replacements usually finish in one day. Complete system upgrades might need two days.
A: Yes. We offer financing with competitive rates. We also help you access rebates from manufacturers, utility companies, and government programs that often total $100 to $2,500.
Looking for a reliable HVAC company in Northern New Jersey? AMS proudly serves Paramus and the surrounding region with expert heating, cooling, indoor air quality, and energy-efficiency solutions.

15% off all HVAC services
$39 service fee waived on completed work
Annual water heater flush + battery replacement
Comprehensive home safety and priority service.
Comprehensive Priority service

We’re committed to delivering reliable, energy-efficient HVAC solutions for every space. With a focus on quality and customer satisfaction, we ensure your comfort is always our top priority.
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