Heating, Cooling, Plumbing & Electrical in Highland, IL

From older homes near the Square to new builds ready for an EV charger, your neighbors at GRP|WEGMAN keep Highland homes running.

Call NowRequest Service
24/7 Service
Flat-Rate Pricing
Union-Trained Techs
Locally Owned

Your Neighbors in Edwardsville

Swiss settlers founded Highland in 1831, and the older homes around the Square still carry that history. Around them are postwar neighborhoods, subdivisions from the 1970s through the 1990s, and newer homes on the edges of town. More Highland homeowners are also adding EV chargers, generators, and bigger electrical panels, and those jobs need to be done right.
Whatever your home needs, GRP|WEGMAN sends union-trained techs and electricians, gives you a flat-rate price before any work starts, and answers the phone 24/7. When a job needs a permit, we pull it and handle the inspection. We’ve been part of the Metro East for more than 70 years, and we work on your home like it’s one of our own.

Home Services in Highland

Heating, cooling, plumbing, and electrical, all from one local team.

GRP|WEGMAN technician testing the wiring inside a home furnace with a meter

Furnace & Boilers

Repairs, replacements, and fall tune-ups for forced air and boiler heat.
Heating Services
GRP|WEGMAN technician checking an outdoor AC unit with refrigerant gauges and a multimeter.

Air Conditioning

Fast AC repair and honest advice on when it’s time to replace.
Air Conditioning
Leaky pipe under a sink

Plumbing

Leaks, fixtures, and repairs done right the first time.
Plumbing
GRP|WEGMAN technician inspecting a water heater’s valves while holding a tablet

Water Heaters

Tank, tankless, and heat pump water heaters, repaired or replaced.
Water Heaters
GRP|WEGMAN technician carrying a tool bag up a home’s front walk, with a company service truck in the driveway

Drains & Sewer Lines

Clogged drains cleared and older sewer lines inspected.
Drain Cleaning
Wall-mounted EV charger plugged into an electric car in a home garage

Electrical

Panel upgrades, EV chargers, lighting, and repairs, with permits handled.
Electrical

What We See in Highland Homes

Highland’s homes range from pre-war houses near the Square to brand-new builds. Each era needs something different.

Homes Near the Square

About one in ten Highland homes was built before 1940, many on the older streets around the Square. These homes often have original drain lines, older piping, and wiring that was never meant for today’s appliances. We look at what you have before we recommend anything.

Postwar Neighborhoods

Homes built from the 1950s through the 1970s are solid, but many still have original ductwork and smaller electrical panels. A panel or duct check now can head off bigger problems later.

Growing Subdivisions

The typical Highland home dates to about 1979, and a lot of town was built from the late 1970s through the 1990s. Many of these homes are on their second furnace and AC, and some of those are now 15 years old or more. Planning the next replacement beats an emergency call in January.

Newer Homes

About 15 percent of Highland homes were built in the 2000s, with more going up since. These systems are reaching their first big service milestones, and many owners are adding EV chargers or generators. Regular tune-ups through the At Home Club keep things running and help protect manufacturer warranties.

Not sure what your home needs? Call 618-258-9000 or request service

How It Works

Simple, upfront, and no surprises.
At Home Club Members
pay no service call fees.
See the Club →

1

Call or Request Service

Call 618-258-9000 anytime, 24/7, or request service online. We'll find a time that works for you.

2

Get Your Price Up Front

Your technician finds the problem and gives you a flat-rate price before any work begins. No hourly guessing and no surprises at the end.

3

Problem Solved

We fix it right, clean up after ourselves, and make sure everything’s working before we leave

GRP|WEGMAN AT HOME CLUB

Keep Highland Homes Running Year-Round

The At Home Club takes care of your heating and cooling with spring and fall tune-ups, priority service, and no service call fees.
$198/year
No monthly fees
Join the At Home Club →

Spring & Fall Tune-Ups

Your AC checked before summer, your furnace before winter.

Priority Service

Members get priority scheduling, even during heat waves.

No Service Call Fees

Including nights, weekends, and holidays.

10-Year Labor Warranty

On new HVAC systems installed by GRP|WEGMAN.

What Our Neighbors Say

“
They were here the next day and had my air conditioner in and I had air that night.
“Our AC had went out... I called and they got it all set up and they were here the same day to evaluate the situation... It's so quiet you can't even hear it... fantastic guys, very courteous, very professional, explained everything about the whole unit. It was just a very fabulous experience with us.”
RHONDA Edwards
GOOGLE REVIEW
See our reviews on Google →

Highland
Questions

Still have a question?
Call 618-258-9000, 24/7.

Do you serve all of Highland?

Yes. We cover the whole town, from the Square to the newest homes on the edge of town, and nearby communities like Troy and St. Jacob.

Can you install an EV charger in my Highland home?

Yes. Our union-trained electricians install chargers, run dedicated circuits, and upgrade your panel if it needs more capacity. We pull the permit and handle the inspection.

Do you install home generators?

Yes. We can help you choose and install a generator to keep your heat, sump pump, and essentials running when the power goes out.

Do you work on older homes near the Square?

Yes. Older homes often have original drain lines, older piping, or wiring that has been added to over the years. We take the time to understand your home before giving you options.

My home is from the 1990s and still has an older furnace and AC. Should I replace them?

Not always. If they’re running well, a tune-up may keep them going. If they’re 15 years old or more and need a big repair, we’ll walk you through the numbers and give you a straight answer.

Also Serving Highland's Neighbors

View All Service Areas

Furnace, AC, or electrical trouble in Highland?

Call your Neighbors at GRP|WEGMAN

Save our number in your phone so it's there when you need it:  618-258-9000. We answer 24/7.

Request Service

Tell us what's going on and we'll call you back during business hours.
Need help now? Call 618-258-9000, 24/7.

Fields marked with an asterisk (*) are required.
Thanks! We'll call you back during business hours. If it's urgent, call 618-258-9000 anytime.
Oops! Something went wrong while submitting the form, please try again. If it's urgent, call 618-258-9000 anytime.
GRP|WEGMAN At Home
MORE SERVICES
Commercial/Industrial Facility ServicesSolar & Renewable EnergyEnergy Savings
About
Contact UsSuccess StoriesOur History
Copyright © 2026 GRP|WEGMAN