Top Emergency HVAC Services in Waltham, MA,  02451  | Compare & Call

Waltham HVAC Company

Waltham HVAC Company

Waltham, MA
Emergency HVAC Services

Phone : (888) 996-4787

Waltham HVAC Company provides heating and cooling service for homes and small businesses in Waltham, Massachusetts. The team handles repairs, system checks, and replacements with a focus on safety, comfort, and clear pricing.
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Ken's HVAC Services

Ken's HVAC Services

★★★★★ 5.0 / 5 (3)
28 College Rd Ste 1, Waltham MA 2451
Heating & Air Conditioning/HVAC

Ken's HVAC Services in Waltham, MA, is your trusted local expert for heating and cooling needs. With skilled technicians providing service since 2014, they handle installations, repairs, and maintenance for residential and commercial systems. They offer reliable emergency HVAC repair across the Greater Boston area, helping keep homes comfortable and efficient year-round.

Valiant Oil Company

Valiant Oil Company

★★★★★ 4.8 / 5 (24)
30 Elm St, Waltham MA 2453
Heating & Air Conditioning/HVAC

Valiant Oil Company is a trusted HVAC contractor in Waltham, MA, providing reliable heating system repair. Their skilled technicians offer prompt service to residents in Boston, Newton, Brookline, and surrounding communities. Known for dependable work, they are a local choice for keeping your home comfortable.

Genove Oil & Air

Genove Oil & Air

★★★★☆ 4.2 / 5 (55)
53 Williams St, Waltham MA 2453
Heating & Air Conditioning/HVAC

Genove Oil & Air, a trusted HVAC contractor in Waltham, MA, provides expert heating and cooling services. With roots dating back to 1977, this locally owned company handles system installation, repairs, and maintenance. Known for an A+ BBB rating and multiple service awards, their skilled technicians serve the Greater Boston area with reliable care for both residential and commercial needs.

Leblanc Mechanical

Leblanc Mechanical

★★★★☆ 3.9 / 5 (11)
1250 Main St, Waltham MA 2451
Heating & Air Conditioning/HVAC, Water Heater Installation/Repair

Since 1989, LeBlanc Mechanical has been a trusted HVAC and water heater company in Waltham, MA. Their skilled technicians handle installations and repairs for heating, cooling, and water heaters, including emergency service for urgent needs across the Boston area. With decades of experience and NATE-certified pros, they provide reliable climate control solutions.

Syntegra Facilities Services

Syntegra Facilities Services

★★★★★ 4.8 / 5 (4)
116 Robbins St, Waltham MA 2453
Heating & Air Conditioning/HVAC, Painters, Office Cleaning

Syntegra Facilities Services in Waltham, MA is a trusted commercial partner since 1999. They handle HVAC installation, painting, and deep office cleaning across the Metro Boston area. With over 50 years of combined team experience, they provide reliable service for your facility's needs.

Hickey's Plumbing & Heating

Hickey's Plumbing & Heating

★★★★☆ 4.3 / 5 (12)
20 Demerest St, Waltham MA 2452
Plumbing, Heating & Air Conditioning/HVAC, Water Heater Installation/Repair

For reliable plumbing and HVAC services in Waltham, MA, trust Hickey's Plumbing & Heating. Since 2001, this family-owned company handles installations, repairs, and maintenance for heating, cooling, and water systems. Their skilled technicians provide 24/7 emergency service, ensuring trusted solutions for your home or business across the Boston area.

J.W. Langton Plumbing & Heating

J.W. Langton Plumbing & Heating

★★★★★ 5.0 / 5 (1)
611 Trapelo Rd Unit 1, Waltham MA 2452
Heating & Air Conditioning/HVAC, Plumbing, Water Heater Installation/Repair

J.W. Langton Plumbing & Heating is a trusted Waltham, MA contractor. Their skilled technicians provide reliable plumbing, water heater, and HVAC services for homes across the MetroWest area. From installations to emergency repairs, they focus on durable solutions and clear communication for every job.

A & D Sheet Metal

A & D Sheet Metal

★★★★☆ 4.4 / 5 (7)
15 Farwell St, Waltham MA 2453
Heating & Air Conditioning/HVAC

Since 1977, A & D Sheet Metal has been a trusted HVAC company in Waltham, MA. They provide expert installation, repair, and maintenance for heating and cooling systems, available around the clock for emergency service. Their skilled team works on both residential and commercial projects across the Greater Boston area.

Golden Plumbing & Heating

Golden Plumbing & Heating

★★★★★ 5.0 / 5 (4)
Waltham MA 2453
Plumbing, Heating & Air Conditioning/HVAC

Golden Plumbing & Heating serves Waltham, MA, and nearby towns with reliable plumbing and HVAC solutions. Their skilled team handles everything from bathtub and shower installation to drain work and system repairs. As a trusted local resource, they offer prompt emergency service to keep your home's water and heating systems running smoothly.

Royal Cooling

Royal Cooling

★★★★★ 5.0 / 5 (2)
738 Main St, Waltham MA 2451
Heating & Air Conditioning/HVAC

Royal Cooling is a trusted HVAC company in Waltham, MA, with expertise since 1988. Their skilled technicians handle system installation, repairs, and maintenance for both homes and businesses. They provide reliable service to Watertown, Newton, Brookline, and surrounding communities, using advanced diagnostics to keep heating and cooling systems running smoothly.

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HVAC Service in Waltham, MA: A Trusted Guide for Homeowners

If you own a home in Waltham, Massachusetts, you know our local weather doesn't mess around. We get the full spectrum: the heavy humidity of a summer heatwave, the deep freezes that come with nor'easters, and everything in between. That's why a reliable HVAC system is more than a luxury—it's a necessity for your comfort and safety. This guide is here to help you understand all about HVAC service in Waltham, MA, from routine maintenance to knowing when you need to pick up the phone for emergency help.

What Does HVAC Service Really Mean in Our Area?

For Waltham homeowners, HVAC service covers everything needed to keep your home's climate under control. It's not just one thing. It includes seasonal tune-ups to get your AC ready for June or your furnace ready for December. It covers repairs when something breaks, whether it's a small thermostat issue or a major motor failure. Most importantly, it means having access to emergency response and same-day service when your system quits at the worst possible moment. We see folks all over town—from the South Side to the Moody Street area—relying on these services to protect their families and their homes year-round.

Understanding a True HVAC Emergency

When should you consider it an emergency? Your safety is always the top priority. You should call for emergency HVAC service immediately if you have no heat during freezing weather, especially with children or elderly family members at home. If your AC completely fails during a dangerous heatwave, that's also an emergency. Any signs of a gas leak, like that distinct rotten egg smell, or if your carbon monoxide alarm goes off, require you to leave the house and call for help right away. Other urgent situations include seeing smoke or hearing loud banging from your system, or discovering a major water leak from your air conditioner that's soaking your floor or ceiling.

How Waltham's Climate and Homes Challenge Your System

Our local climate here in Middlesex County puts real stress on heating and cooling equipment. Summer humidity makes your AC work overtime, leading to frozen coils or clogged drain lines. Winter storms and salt air can accelerate wear on furnace components. Many of our neighborhoods feature beautiful, older homes with aging furnaces or boilers that need careful attention, while newer constructions and condos often use modern heat pumps or ductless mini-split systems. Each type of home and system has its own common issues, which is why finding a technician familiar with Waltham's specific housing stock is so valuable.

Common HVAC Problems We See in Waltham Homes

We've been on thousands of service calls in this city, and certain problems pop up again and again. In the summer, we get many calls for AC not cooling, often due to a failed capacitor or a refrigerant leak. In winter, furnaces not igniting is a frequent issue, sometimes from a dirty flame sensor. Clogged condensate lines are a classic Waltham problem; when the AC's drain line backs up, it can cause water to leak inside your home, damaging floors or walls. We recently helped a family in the Cedarwood area who had water dripping through their ceiling because of this exact issue. Another common call involves strange noises or weak airflow, which can stem from a blower motor nearing the end of its life.

Emergency, Same-Day, or Routine Service: Which Do You Need?

Part of being a smart homeowner is knowing which type of HVAC service to request. This is key for all HVAC service in Waltham, MA. Emergency service is for the safety-critical situations we just discussed—no heat in a freeze, CO alarms, gas smells. Same-day service is perfect for urgent but not immediately dangerous problems, like an AC that's struggling on a hot day or a furnace that's making a new, concerning noise. For everything else—like scheduling your annual maintenance, a minor repair you've noticed, or planning a system replacement—routine service during normal business hours is the way to go. A good local company should be able to clearly guide you when you call.

Being Clear About HVAC Service Costs

We believe in transparency. For most professional HVAC service calls in our area, there is a standard diagnostic fee. This covers the technician's time to identify the root cause of your problem. For emergencies that occur outside of normal business hours, on weekends, or on holidays, there is typically an emergency call-out fee, and labor rates are often higher. Parts are priced separately. As a general estimate for the Waltham area, a standard diagnostic visit might range from $85-$125. An emergency call-out fee could be $150-$250, with after-hours labor rates potentially 1.5 to 2 times the standard rate. For example, a common emergency repair like replacing a furnace ignitor on a cold Sunday evening might have a total cost (including call-out, labor, and part) in the range of $350-$500. A more complex repair, like fixing a refrigerant leak in an AC system, would be more.

Signs You Need Immediate HVAC Service

  • You have no heat when the outside temperature is below freezing.
  • Your carbon monoxide (CO) alarm is sounding.
  • You smell natural gas (like rotten eggs) near your furnace or boiler.
  • You see smoke or smell burning coming from your HVAC equipment.
  • Water is pooling from your indoor air handler or AC unit.
  • You hear loud banging, screeching, or buzzing noises from the system.
  • Your air conditioner stops working entirely during a period of dangerous heat.

A Quick Safety Checklist While You Wait for Help

If you've called for emergency service, here's what to do while you wait for the technician to arrive:

  • If you smell gas, evacuate immediately and call your gas utility company from outside.
  • If your CO alarm sounds, get everyone outside into fresh air right away.
  • If it is safe to do so, shut off the power to your HVAC system at the breaker.
  • Keep everyone, especially children and pets, away from the malfunctioning equipment.
  • Move any vulnerable family members (infants, elderly) to a safe, comfortable location if possible.
  • Remember: Never attempt to repair gas lines or high-voltage electrical components yourself.

Local Rules and Why a Licensed Pro Matters

In Waltham and across Massachusetts, HVAC work must follow strict codes. Proper furnace venting is critical to prevent carbon monoxide poisoning. Handling refrigerants requires an EPA 608 certification. Major installations like a new furnace or AC often need a permit from the local building department. Hiring a licensed, insured HVAC service professional ensures the work is done safely, correctly, and up to code, protecting your home and your family.

What to Expect for Response Times in Waltham

When you call for emergency HVAC service, a realistic response time in the Waltham area is typically within 60 to 120 minutes. Factors like severe weather, traffic on major routes like I-95 or the Mass Pike, and your specific neighborhood can affect this. A trustworthy company will give you an honest window and keep you updated.

Your Trusted Local HVAC Resource

We hope this guide has been helpful in explaining HVAC service in Waltham, MA. Knowing how your system works, when to call for help, and what to expect can give you real peace of mind. For emergencies, same-day repairs, or routine maintenance, having a local expert you can count on makes all the difference.

Waltham Emergency HVAC provides trusted HVAC service in Waltham, MA, including 24/7 emergency response and same-day repairs. Call (888) 996-4787 now for immediate dispatch.





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