HVAC Services in Radnor, PA

Family-Owned Since 1986. Honest Service Every Time.

Since 1986, Carl j Wendler heating and cooling has been the HVAC company Radnor residents and businesses call when they need the job done right. Carl Wendler founded this company in the community he grew up in, all with one goal: honest service from people who treat every customer like family. 

More than four decades later, that’s still exactly what we deliver. Our NATE-certified technicians handle all kinds of heating, cooling, and indoor air quality projects in both residential and commercial settings. Need help in an emergency? We respond to calls 24/7, so don't hesitate to reach out. 

HVAC Problems? We’ll Restore Your Comfort.

A malfunctioning HVAC system means rising energy bills, inconsistent comfort, and poor air quality. Whether you’re dealing with poor ventilation, clogged filters, or a system that can’t keep up, we’re here to help.

Our NATE-certified technicians diagnose and resolve a wide range of HVAC issues quickly, from minor repairs to system-wide inefficiencies. We communicate clearly from the first call through job completion, provide timely updates, and leave the space clean when the work is done. Catching problems early can help prevent costly breakdowns and can extend your system’s lifespan.

Air Conditioner Services

Staying cool all summer is easy with our professional air conditioning services. We provide AC installation, repair, and maintenance for both residential and commercial properties. When it’s time for a replacement, we present tiered quotes with honest guidance about what actually fits your home and your budget. We don’t push systems that aren’t the right fit. Our maintenance plans keep your AC running smoothly, improve performance, and extend system lifespan.

How a New AC Unit Can Transform Your Home’s Comfort

A new air conditioner offers more than relief from the heat. Modern systems provide more consistent cooling, better humidity control, and energy-saving features that can lower your utility bills. Upgraded filtration also reduces dust, allergens, and pollutants, so the air your family breathes is cleaner. The result is a home that’s more comfortable and healthier year-round.

Keep Your AC in Peak Shape With Repairs & Maintenance

Even a well-made air conditioning system needs periodic maintenance and repairs to stay efficient. Our certified technicians handle everything from minor adjustments to major overhauls. Routine maintenance helps prevent breakdowns and keeps your system delivering consistent cooling and clean air throughout the season.

Mitsubishi Electric Mini-Split Installation & Service in Radnor

We install, maintain, and repair Mitsubishi Electric ductless mini-split systems, including the full line of units with advanced zone control and built-in filtration. Mitsubishi Electric systems have their own design requirements and service needs, so we treat this as a dedicated offering separate from our general mini-split work. Mini-splits are a strong fit for homes without existing ductwork and for anyone who wants room-by-room temperature control. Zone control lets different rooms run at different temperatures, so you’re not conditioning space you’re not using.

We handle mini-split installation, repair, and maintenance for properties throughout Radnor. 

Local Heating Services

A dependable heating system is essential for staying warm through a Delaware County winter. We offer installations, repairs, and maintenance for furnaces, boilers, and heat pumps for both residential and commercial properties. Our NATE-certified technicians bring real diagnostic experience to heating calls, getting issues resolved quickly so your home or business stays comfortable. We also provide commercial heating services for businesses in the area.

Complete Furnace Solutions

Your furnace works hard all winter, and proper care keeps it working efficiently. We offer comprehensive furnace services to make sure yours is in peak shape. If it isn’t heating the way it should, or has stopped working altogether, give us a call, and we’ll diagnose and fix the issue quickly. 

Boiler Services

Boilers deliver consistent, efficient heat, but they require care that most homeowners aren’t equipped to provide. Whether your boiler needs adjustments for uneven heating or repairs for leaks, our technicians can handle it. We’ll keep your boiler running safely and at peak performance all winter long.

Heat Pump Services

Heat pumps transfer heat between your home and the outside rather than generating it from fuel, making them one of the most energy-efficient options for year-round comfort. A heat pump installation can lower your energy usage, improve airflow, and deliver clean indoor air in every season, with a single system handling both heating and cooling. We offer full heat pump replacement, repair, and maintenance, so your system keeps performing for years to come.

Indoor Air Quality Solutions

Good indoor air quality matters for every home and business. We provide a range of IAQ services, including air purification systems, air filters, and humidity control solutions. Proper humidity control protects your health and your building materials, keeping moisture levels where they belong so your space stays comfortable and your structure stays sound.

Get a Free Estimate for Our Radnor HVAC Services

One call gets you a free estimate and a convenient appointment. What are you waiting for? Trust your comfort with our family of NATE-certified pros.

Call Carl j Wendler heating and cooling at (610) 572-3926 or get in touch online to start with us.