404 Main St.McNabb, IL
815-882-2111 • 800-644-9238
24/7 Emergency Service Available
About Grassers

LaSalle & Bureau Counties Largest Plumbing, Heating and Air Conditioning Contractor

Award Winning Plumbing and HVAC Services.

Serving – LaSalle, Ottawa, Princeton, Peru Spring Valley & Beyond.

Grassers Plumbing & Heating is a reliable air conditioning, heating, plumbing company located in McNabb IL. serving the Illinois Valley for over 60 yrs. Our family owned and operated company is friendly, reliable, and affordable to bring your home or business total comfort.

SEE SOME OF OUR AMAZING REVIEWS!

WHY Grasser’s Plumbing & Heating?

24/7 Emergency Plumbing & HVAC

With over 40 trucks on the road at any given time our technicians and plumbers can respond to your emergency – fast. Our plumbers and HVAC technicians offer 24/7 emergency repair service, whether it’s a holiday, weekend or at 3:00 am, our friendly technicians can be there when you need service most.

Local Reviews

Rated 4.9 out of 5 stars based on 439 customer reviews

Map of Princeton, IL

Awesome Price




Heather was so nice and helpful when I stopped in. She worked with me on the pricing of my new appliance and I am so happy.


Map of Leonore, IL

Nice young man




Had Greg out and was so nice and kind to me. he did a great job and just very pleasant to be around. thank you grassers


Map of Streator, IL

Sweet girl




Had Heather on phone and was so sweet and helpful. thank you


Map of Spring Valley, IL

Awesome Guy




We had a few people and a service tech come work on my oven and the Awesome Guy found the issue.


Map of Streator, IL

100% reliable




am a new customer and had been referred to them from a friend. i will def be back. they are nice, reliable and best priced around. thank you for your fast service.


Map of Dalzell, IL

Happy customer




Had Grassers out this am to do a furnace check and clean. They did a great job, explained everything and even gave me a price on a new furnace because they noticed I had a co leak I didn't even know about. Price was better then I expected. Will be going with a new one!!!


Map of Serena, IL

Happy Happy




Very happy and love my new appliance, thank you Grassers!


Map of Lacon, IL

Love Grassers




Used Grassers for years and always happy and pleasure. Had installation crew over today to do microwave installation and it went perfectly. I knew would be a pain in the ass but they did fantastic. great crew as always!


Map of Peru, IL

Great install




Had a new washer installed yesterday and very happy with the product. Runs great and the crew did a great job.


Map of Serena, IL

Perfect install




Had a water heater installed and couldn't be happier. Service tec even cleaned up and left room better then was. Best part is they even dispose of the old one. Very happy customer.


JACOB H.

JACOB H.

Replaced gas valve on water heater

Near Meredith Dr, Streator, IL 61364
JACOB H.

JACOB H.

Thermostat wires were broken and shorted out.

Near Pearl St, Ottawa, IL 61350
JACOB H.

JACOB H.

Replaced heat exchanger on leaking tankless water heater

Near River Edge Cir, Ottawa, IL 61350
JACOB H.

JACOB H.

Checked tankless water heater for abnormal noises

Near River Edge Cir, Ottawa, IL 61350
JACOB H.

JACOB H.

Removing air from boiler system

Near N 28th Rd, Seneca, IL 61360
JACOB H.

JACOB H.

Checking boiler for proper operation

Near Grant St, Peru, IL 61354
JACOB H.

JACOB H.

Gas piping and installing recirculating pump for water heater

Near N Main St, Princeton, IL 61356
JACOB H.

JACOB H.

Replaced gas valve on furnace

Near E Open View Dr, Byron, IL 61010
JACOB H.

JACOB H.

No heat needs new furnace

Near E Mulberry St, Hennepin, IL 61327
JACOB H.

JACOB H.

Exhaust blower was stuck

Near E Mulberry St, Hennepin, IL 61327