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 396 customer reviews

Map of Granville, IL

Great service




Matt came out and found my unit shot and quoted us a new one. BEST PRICES AROUND can't beat Grassers. One happy customer:)


Map of Oglesby, IL

Super friendly




Had Jacob out who was friendly and took the time to get my AC back up and running. THANK YOU GRASSERS AND JACOB!!


Map of Mendota, IL

No where else go




Have used Grassers for many years and each employee does an outstanding job. Their technicians, service, even speaking with Heather on the phone was amazing. Highly recommend Grassers!!


Map of Marseilles, IL

Cool & Happy




Had tec out in 90 something weather and boy am very happy. Was miserable and thanks to Grassers Greg got me up and running.


Map of LaSalle, IL

Great service




Had tec out and went through all my issues and fixed in a timely manner, very happy customer


Map of Princeton, IL

Great Technician




Very happy with Aaron our technician who came to the house. Nice and very informative highly recommend.


Map of Henry, IL

Great customer service!




After an incident their staff was wonderful to work with. They really do care about their customers and want to make it right! No questions asked.


Map of Princeton, IL

Best Technician around




Highly recommend Matt for Air Conditioning Checks. He is so informative and nice, Grasser's is so lucky!!!


Map of Mendota, IL

Helpful and sweet




Stopped in today and Heather waited on me. Very helpful, took her time and explained everything. Very impressed, so happy to have bought washer and dryer from her!


Map of Ottawa, IL

Matt was the best




Matt came in the rain and worked on my air conditioner, never complained and did an outstanding job.


JACOB H.

JACOB H.

Replaced flow sensor on tankless water heater

Near Hidden Shores Dr, Dixon, IL 61021
Matt B.

Matt B.

Near Granville, IL 61326
JACOB H.

JACOB H.

Near Oglesby, IL 61348
Heather D.

Heather D.

Near Mendota, IL 61342
Gregory D.

Gregory D.

Near Marseilles, IL 61341
Heather D.

Heather D.

Near LaSalle, IL
Heather D.

Heather D.

Near Princeton, IL 61356
JACOB H.

JACOB H.

Found earwig in contactor on air conditioner

Near 1900 N Ave, Princeton, IL 61356
JACOB H.

JACOB H.

Charging ac unit

Near Central St, Spring Valley, IL 61362
Heather D.

Heather D.

Near Henry, IL 61537