Heating & AC Repair in Union, NJFurnaces, Boilers & Heat Pumps
Furnace, boiler and heat pump repair in Union, NJ from our Morris Avenue office, plus AC service. 24/7 no-heat emergency line: (908) 249-9701.
Heating repair in Union: furnaces, boilers and heat pumps
Dimatic Control is a licensed New Jersey HVACR contractor (license #19HC00310800) working out of 1992 Morris Avenue, Suite 241, in Union, and covers both Union ZIP codes, 07083 and 07088 (Vauxhall). Union's houses are older than most people expect. The median home in the township was built in 1956, and 61% of homes went up before 1960. That is why a Union heating call is as likely to be a gas boiler feeding cast-iron radiators as a forced-air furnace.
| Heating fuel | Homes | Share |
|---|---|---|
| Natural gas from the utility | 17,206 | 80% |
| Electricity (heat pumps, electric furnaces, baseboard) | 2,771 | 13% |
| Heating oil | 741 | 3.5% |
| Propane or tank gas | 416 | 2% |
How Union's 21,374 occupied homes heat, from the Census Bureau's 2020-2024 American Community Survey. About 1 home in 5 in the township (4,508) was built in 1939 or earlier.
Gas furnace repair
Most forced-air homes in Union run a gas furnace. When one stops heating, the cause is usually one part in the start-up sequence, and the furnace's flash code tells us which one.
- Burners won't light: a worn hot-surface igniter or a dirty flame sensor
- Furnace starts, runs a few minutes and shuts off (short cycling)
- Blower runs but the air is cold
- High-efficiency furnace locked out by a blocked vent pipe or a clogged condensate drain
- Limit or rollout switch tripping, which can point to a blocked flue or a cracked heat exchanger
Steam and hot-water boiler repair
Union's pre-1960 homes are where boilers live: steam systems with radiators in the older colonials, hot-water (hydronic) baseboard in many mid-century homes. We service both.
- Some radiators or zones stay cold while others heat
- Banging or hammering pipes on a steam system
- Boiler shutting off on low water
- Pressure relief valve dripping or pressure climbing on a hot-water boiler
- Circulator pump or zone valve failure
Heat pumps and electric heat
About 13% of Union homes heat with electricity, mostly heat pumps, electric furnaces and baseboard in newer builds, additions and converted units.
- Heat pump running constantly without warming the house
- Outdoor unit iced over and not defrosting
- Electric furnace blowing cold air after a heating element or sequencer fails
No heat in Union tonight? Check these first
- Thermostat: set to Heat, a few degrees above the room temperature. If the screen is blank, change the batteries.
- Power: the furnace or boiler service switch (it looks like a light switch, often at the top of the basement stairs or on the unit) is on, and the breaker has not tripped.
- Filter: a clogged furnace filter can overheat the furnace until a safety switch shuts it off. Replace it and try again.
- Furnace door: the blower door must be fully closed, or a safety switch keeps the furnace off.
- High-efficiency furnace: the white plastic vent and intake pipes outside must be clear of snow, ice and leaves.
- Boiler: a hot-water boiler gauge usually reads about 12 to 15 psi when cold; a steam boiler should show water in the glass sight tube. If it is low, call us. Never add water to a hot steam boiler.
- Smell gas? Leave the house, do not flip switches, and call 911 or your gas utility from outside.
- Carbon monoxide alarm going off? Get everyone out and call 911 before calling us.
Repair or replace: what decides it
- Age matters, but it doesn't decide it alone. A well-kept older boiler can outlast a neglected newer furnace. How long furnaces last in New Jersey
- A cracked furnace heat exchanger means replacement, because it can let carbon monoxide into the air you breathe. Furnace carbon monoxide safety
- The same failure coming back in one or two seasons usually costs more than it saves to keep fixing.
- Discontinued parts on older boilers and furnaces can turn a small repair into a long wait with no heat.
- Efficiency: ENERGY STAR gas boilers are rated 90% AFUE or higher, about 6% more efficient than the federal standard; oil boilers 87% or higher.
- Venting: going from an old chimney-vented unit to a high-efficiency one changes the venting, and a water heater left alone in the old chimney may need a liner. Chimney and venting
- New Jersey has rebates and tax credits for qualifying high-efficiency equipment; ask us which ones apply to the system you are considering. Financing and rebates
Heating questions Union homeowners ask
Do you fix steam and hot-water boilers in Union?
Yes. With most of Union's homes built before 1960, a lot of the township still heats with a gas boiler and radiators or baseboard. We repair and replace both steam and hot-water boilers, from cold radiators and banging pipes to low-water shutoffs and failed circulator pumps. Boiler service
Can someone come tonight if we have no heat?
Dimatic runs 24/7 emergency heating service for Union and the towns around it. Call (908) 249-9701 and tell us whether you have a furnace, boiler or heat pump and what the thermostat shows. Emergency heating service
My furnace is flashing an error code. What does it mean?
The flash code points at the part that stopped the furnace: ignition, flame sensing, the pressure switch or a limit switch. Our error-code guide covers the major brands. If the same code comes back after a reset, call us; repeated limit or rollout codes can mean a blocked flue or a cracked heat exchanger. HVAC error code guide
Do I need carbon monoxide alarms?
Yes. Since September 3, 2017, New Jersey's fire code (N.J.A.C. 5:70-4.9(d)) has required carbon monoxide detection in existing homes that have a fuel-burning appliance or an attached garage. That covers every Union home heating with gas, oil or propane, about 86% of them. The CDC counts more than 400 U.S. deaths, more than 100,000 emergency room visits and more than 14,000 hospital stays from accidental carbon monoxide poisoning every year.
Do you cover Vauxhall and the rest of Union Township?
Yes: all of Union Township in both ZIP codes, 07083 and 07088, including Vauxhall, Connecticut Farms, Five Points, Union Center, Battle Hill and Townley, plus the neighboring towns listed below.
What does a heating repair cost?
It depends on the system and the part, so we don't list prices online. Call (908) 249-9701 to book a repair visit or a free estimate on a replacement.
Heating service near Union
Sources
- U.S. Census Bureau, American Community Survey 2020-2024, house heating fuel, Union township (via Census Reporter)
- U.S. Census Bureau, American Community Survey 2020-2024, year structure built, Union township (via Census Reporter)
- CDC, Carbon Monoxide Poisoning Basics
- New Jersey Division of Fire Safety, Uniform Fire Code, N.J.A.C. 5:70-4.9(d)
- ENERGY STAR, Boilers
HVAC Services in Union
Complete heating, cooling, and ventilation services for Union homes and businesses.
Heating Repair
24/7 heating repair and emergency service
Air Conditioning Repair
Fast AC repair and cooling system service
HVAC Installation
Professional HVAC system installation and replacement
Preventive Maintenance
Annual HVAC maintenance and tune-ups
24/7 Emergency Service
Emergency HVAC repair available 24/7
Furnace Installation
Professional furnace installation and replacement
Heat Pump Installation
Heat pump installation and setup
Heat Pump Repair
Heat pump repair and troubleshooting
AC Installation
Professional AC installation and replacement
Ductless Mini-Split Systems
Mini-split installation and service
Thermostat Installation
Thermostat installation and setup
Smart Thermostat Installation
Smart thermostat setup and configuration
Ductwork Installation
Ductwork installation and repair
Indoor Air Quality
Indoor air quality improvement
Humidity Control
Humidity control systems
Commercial HVAC
Commercial HVAC services
Commercial Refrigeration
Commercial refrigeration repair and service
Zoning Systems
Zoning system installation
Energy Audit
HVAC energy efficiency audit
Ventilation Services
Ventilation system installation and repair
Radiant Floor Heating
Radiant floor heating systems
HVAC Services Throughout Union, NJ
Dimatic Control proudly serves all neighborhoods and areas in Union. From local businesses to residential homes near popular landmarks, we're your trusted HVAC partner.
Local Landmarks We Serve
Our technicians know Union inside and out. We provide HVAC services near:
Neighborhoods We Service
Fast response times to all Union neighborhoods including:
HVAC Expertise in Union, NJ
Local Insights
Dimatic Control's office is on Morris Avenue in Union, so Union Township is home ground: both ZIP codes, 07083 and 07088 (Vauxhall), from the Route 22 corridor to the streets around Kean University. The township's 21,374 occupied homes range from pre-war colonials to newer townhomes, with shops, offices and restaurants along Morris Avenue, Stuyvesant Avenue and Route 22.
Climate Considerations
Union gets hot, humid summers and cold winters, so most homes here run two systems hard every year: air conditioning through the summer and heat from fall into spring. Humidity is the summer problem, which makes clear condensate drains and correctly sized AC equipment matter. In winter, snow and ice can block the plastic vent and intake pipes of high-efficiency furnaces and boilers and shut them down.
Building Types We Serve
The median home in Union was built in 1956, and 61% of the township's housing went up before 1960, according to the Census Bureau's 2020-2024 American Community Survey. About 80% of occupied homes heat with natural gas, 13% with electricity, 3.5% with heating oil and 2% with propane. In practice that means gas furnaces and gas boilers with radiators or baseboard in the older neighborhoods, and heat pumps or electric heat in newer builds and converted units. Commercial buildings along Route 22 and Morris Avenue often run rooftop units.
Seasonal Tips
Turn the heat on for a test run before the first cold night, not during it. Change the furnace filter, make sure the outdoor vent pipes are clear, and check the pressure gauge or sight glass on a boiler. Test your carbon monoxide alarms: New Jersey has required carbon monoxide detection since 2017 in homes with a fuel-burning appliance. In spring, have the AC checked before the first heat wave.
Your Trusted Union HVAC Experts
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Emergency Service, Commercial Refrigeration, Smart Thermostat Installation
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