HVAC Services in Haverford, PA

Family-Owned Since 1986. Honest HVAC Service for Your Home.

Carl j Wendler heating and cooling was founded in 1986 by Carl Wendler, a local who grew up, went to school, and started his family right here in the community he now serves. After years of working for larger HVAC companies, Carl launched this business with one goal: give back to the neighborhood that shaped him. More than four decades later, we’ve earned a reputation as one of the most honest HVAC companies in the area. Our standard is simple: the job isn’t done until you’re happy.

We’re a family-owned contractor providing a full range of HVAC services throughout Haverford, PA. Our NATE-certified technicians handle residential and commercial heating, cooling, and indoor air quality systems. Essentially, we can deliver whatever your home or business needs to stay comfortable year-round.

Call (610) 572-3926 for a free, no-obligation estimate and a convenient appointment.

Our HVAC Solutions

Air Conditioner Services

When Pennsylvania summers arrive, a functioning air conditioning system isn’t a luxury. It’s a necessity. Our NATE-certified technicians provide a complete range of air conditioning services to keep your home cool and comfortable. We guide you through a professional AC installation, pointing you toward units with SEER2 ratings that deliver real energy savings over the life of the equipment. We explain the tradeoffs honestly and won’t push you toward a system that doesn’t fit your home.

Should your system falter mid-season, we offer prompt AC repair to diagnose and fix any issue quickly. We also prioritize preventative maintenance: a yearly AC tune-up covers a thorough inspection and cleaning that boosts efficiency, reduces the risk of mid-season breakdowns, and helps keep your manufacturer warranty intact. 

Furnace Services

Most homes in our area rely on a gas or oil furnace for powerful, consistent warmth. Our team handles all furnace-related services: timely furnace repair for any issue, from a stubborn pilot light to a compromised heat exchanger, always with your safety as the priority. When repairs are no longer economical, we manage a full replacement and help you select a modern unit with better efficiency and lower fuel costs.

Annual furnace maintenance is the best way to catch small problems before they become mid-winter failures. Our tune-up covers the heat exchanger, burners, controls, and airflow, so you head into cold weather with confidence.

Boiler Services

Boiler and hydronic heating systems deliver gentle, even warmth through radiators or baseboards, and they’re common throughout the area. These systems have distinct maintenance requirements from forced-air equipment, and our technicians know them well. We offer boiler repair and maintenance to keep your hydronic system running steadily through every season.

Heat Pump Services

A heat pump transfers heat rather than generating it, making it a notably energy-efficient choice for year-round climate control from a single system. In summer, it moves heat out of your home; in winter, it pulls warmth from the outside air. We offer professional installation, ongoing maintenance, and thorough repair to keep performance consistent no matter the season.

Mini-Split Services

Ductless mini-split systems are a flexible solution for homes without existing ductwork, room additions, converted spaces, and rooms with persistent comfort problems. Each indoor unit operates independently, so you can set temperatures room by room and reduce energy use in unoccupied spaces. Our team installs, maintains, and repairs mini-split systems, including the full line of Mitsubishi Electric ductless units, which we offer as a dedicated service separate from general mini-split work.

Mitsubishi Electric systems deliver advanced zone control and built-in filtration, making them a popular choice on the Main Line for homeowners who want precise comfort and cleaner indoor air. Whether you need a new mini-split installation, a scheduled tune-up, or a diagnostic visit for a system that isn’t performing, our technicians are ready to help.

Indoor Air Quality Services

Ongoing issues like excessive dust, unpleasant odors, or allergy symptoms often point to deteriorating indoor air quality. Summer humidity on the Main Line can compound allergy and comfort issues throughout the season. We assess your specific home and lifestyle, then provide tailored recommendations covering advanced filtration, UV light systems, and humidity control to address the root cause rather than the symptom.

Emergency HVAC Services

HVAC failures rarely happen at a convenient time. A furnace going out in the dead of winter or an air conditioner collapsing during a heat wave aren’t just inconveniences. They affect household safety. We’ve been responding to emergency calls since 1986, and we offer 24/7 emergency HVAC services to the Haverford area year-round. When you need a heating and cooling pro to protect your comfort, don't hesitate to call . 

Commercial HVAC Services

The comfort of your commercial space directly affects employee productivity, customer experience, and, in temperature-sensitive environments, regulatory compliance. We extend our professional HVAC capabilities to business owners across Haverford and throughout Greater Philadelphia. 

Commercial systems are larger and more complex than residential equipment, and our NATE-certified technicians have the training and tools to handle installations, repairs, and preventative maintenance on the equipment your business depends on.

Call Carl j Wendler heating and cooling Today

We treat every customer like family and work hard to make it easy to let us into your home. For any heating or cooling need in Haverford, PA, contact our team.

For honest HVAC services, reach us at  or get in touch online.