When Lombard homeowners search for heating and air near me, TR Miller Heating, Cooling, Plumbing & Electrical delivers both — providing professional air conditioning repair, AC installation, air conditioning replacement, AC maintenance, and indoor air quality services alongside heating, plumbing, sewer, and electrical throughout Lombard and DuPage County. Every cooling service is carried out by professional technicians.
Lombard summers bring sustained heat and humidity that push residential cooling systems hard. Many of Lombard’s older bungalow and ranch homes were not originally built for central air conditioning — ductwork was retrofitted over the decades as cooling technology became standard, and those retrofitted systems are frequently undersized for the home’s current load or compromised by settling and modification. TR Miller includes ductwork assessment as part of every major AC installation and replacement in Lombard — ensuring the new system is installed into a delivery infrastructure capable of supporting it efficiently.
We offer the following cooling services to your area:
- Air Conditioning Repair
- Air Conditioning Installation
- Filter Replacement
- Air Handler Services
- Ductless Mini Split AC Systems
- Evaporator Coil Services
- Air Cleaning & Filtration
- New HVAC Construction
- Thermostats

Curious as to why we’ve been in business for three generations? Read our client testimonials to find out!
Air Conditioning Specials for Lombard, IL Homeowners
- $50 Off Any AC Repair
- Financing Available on a New AC Installation
- Free Consultation Before Any System Replacement
Reliable Air Conditioning Repair in Lombard, IL
TR Miller provides a full range of residential air conditioning services to keep your Bloomingdale home comfortable all summer long. From routine maintenance to emergency repairs to full system installations, our experienced technicians handle it all.
Emergency Air Conditioning Repair in Lombard, IL
A central air conditioning system is a closed-loop refrigerant circuit engineered to extract heat from your home’s interior through a precisely sequenced cycle of compression, condensation, expansion, and evaporation. Under the technical direction of our HVAC Service Manager, Ryan Laske — NATE Certified and EPA Universal 608 Certified with 16 years of residential cooling experience — TR Miller technicians execute diagnostics and repairs in strict accordance with Illinois mechanical code, EPA refrigerant handling regulations, and manufacturer installation specifications.
Common AC repairs we handle:
- No cold air — refrigerant loss, failed compressor, or tripped safety switch
- Weak airflow — dirty filter, blocked return, or failing blower motor
- Uneven cooling — ductwork leaks, undersized system, or malfunctioning thermostat
- Moisture around the unit — blocked condensate drain or refrigerant leak
- Short-cycling — oversized system, refrigerant issue, or failing electrical component
- Unusual noises — mechanical issues that worsen with continued operation
- High indoor humidity despite AC running — common given Lombard clay soil moisture conditions; may indicate undersized system or need for whole-home dehumidifier
Refrigerant Leak Detection & Recovery:
EPA 608 certification is a federal legal requirement for any technician handling refrigerants — a standard every TR Miller cooling technician meets. When a Lombard home’s AC system is underperforming or running continuously without cooling effectively, our technicians conduct a complete refrigerant circuit evaluation using electronic leak detectors and manifold gauge sets. Refrigerant is never topped off without first locating and repairing the source — adding refrigerant to a leaking system delays a necessary repair while accelerating compressor wear.
Ductless Mini-Split & IAQ Service:
Many of Lombard’s older bungalow and ranch homes have areas where existing ductwork does not reach — converted spaces, room additions, and finished basements where ductless mini-split systems provide zoned cooling without the cost and disruption of full duct installation. TR Miller installs and services single-zone and multi-zone systems from Mitsubishi, Daikin, and LG. Combined with TR Miller’s indoor air quality services — whole-home air purifiers, UV lights, humidifiers, and dehumidifiers — Lombard homeowners can address both temperature and air quality in a single service relationship.
Benefits of a ductless mini split:
- No ductwork required
- Room-by-room temperature control
- High energy efficiency ratings
- Provides both heating and cooling
- Quiet operation

Have a question about our services? Contact us to learn about our heating and cooling services.
Why Lombard Homeowners Choose TR Miller
An AC failure during a Lombard summer is not a situation that can wait. TR Miller’s TruCare and TruCare+ membership plans include a same-day service guarantee — book before noon and we guarantee same-day service. Call (815) 912-0028 before noon and TruCare members move to the front of the line.

Frequently Asked Questions
Q: Where can I find heating and air service near me in Lombard, IL?
A: TR Miller Heating, Cooling, Plumbing & Electrical provides complete heating and air conditioning service for Lombard homeowners throughout DuPage County — one company covering heating, cooling, plumbing, sewer, and electrical. Call our local HVAC company for all of your residential comfort and home service needs. Professional technicians, upfront flat-rate pricing, and same-day service for TruCare and TruCare+ members.
Q: Does TR Miller offer emergency air conditioning repair in Lombard, IL?
A: Yes. TR Miller responds to emergency no-cool calls for Lombard homeowners throughout the cooling season. An AC failure during an Illinois summer is a genuine health concern. Call our local HVAC team any time you lose cooling in Lombard. TruCare and TruCare+ members receive a same-day service guarantee when calling before noon. Our local technicians carry common AC components on their service vehicles to resolve the most frequent causes of cooling failure on the first visit.
Q: How often should I schedule AC maintenance in Lombard?
A: TR Miller recommends annual AC maintenance — ideally in early spring before the cooling season begins. A professional tune-up includes cleaning evaporator and condenser coils, checking refrigerant levels, inspecting electrical components, testing the thermostat, clearing the condensate drain, and measuring airflow. TruCare and TruCare+ members receive priority scheduling for annual AC maintenance visits.
Q: What indoor air quality services does TR Miller offer in Lombard?
A: TR Miller provides whole-home air purifier installation, UV light installation, humidifier installation and service, dehumidifier installation and service, and air filtration system installation for Lombard homeowners. Call (815) 912-0028 to schedule an indoor air quality assessment.
Q: Does TR Miller install ductless mini-splits in Lombard homes?
A: Yes. TR Miller installs and services ductless mini-split systems throughout Lombard — particularly well-suited for the village’s older bungalow and ranch homes where existing ductwork doesn’t reach converted spaces, room additions, or finished basements. Single-zone and multi-zone systems are available from Mitsubishi, Daikin, and LG. TR Miller assesses your home’s configuration and cooling load to recommend the right system.