404 W Main St
McNabb, IL 61335
815-882-2111

Local Reviews

Rated 4.9 out of 5 stars based on 474 customer reviews

Great customer service. Quick and efficient..

Technician came out and quickly diagnosed problem and made repairs.

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Speedy! He got here within half an hour and was finished in less than an hour!!

Always the first people I call!

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Great price.

The guy came very quickly and did his job well. The price was very reasonable.

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Great service

Grassers always provides quick, accurate analysis of the heating and cooling system at a reasonable price.

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Fast and great service

Very polite service personnel (Trent). Very quick response. Service was done in a very short time. Trent explained everything. Didn't forget to ask if I had any questions and gave me time to ask him.

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Very quick

Trent got here quickly and did a great job getting our furnace fixed on this -5 degree day.

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Good service

Doug took time to answer my questions and talk to my husband on phone about the problem.

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Great work and professionally done!

I highly recommend Grasser's as your "go to" place for heating and cooling needs!

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Great service!

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Great job!

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Job Locations

JACOB H.

JACOB H. Job Checkin

Found furnace to be over heating


Trent G.

Trent G. Job Checkin

Replace bad gas valve


JACOB H.

JACOB H. Job Checkin

Dirty furnace filter furnace not keeping up and ductwork always banging as well


Doug H.

Doug H. Job Checkin

Install water heater

Install water heater

JACOB H.

JACOB H. Job Checkin

Cleaned drain on furnace


Doug H.

Doug H. Job Checkin

Remove disposal and replumb kitchen sink drain


Trent G.

Trent G. Job Checkin

No heat


JACOB H.

JACOB H. Job Checkin

Furnace had dirty flame sensor.


Doug H.

Doug H. Job Checkin

Fix broken water pipe in garage

Fix broken water pipe in garage

Trent G.

Trent G. Job Checkin

Furnace clean and check


Trent G.

Trent G. Job Checkin

No heat due to a plugged up filter. (Furnace will overheat if not enough return air gets delivered to the furnace)

No heat due to a plugged up filter. (Furnace will overheat if not enough return air gets delivered to the furnace)

Matt O.

Matt O. Job Checkin

Installing a new washer

Installing a new washer

Trent G.

Trent G. Job Checkin

No heat on furnace. Furnace had a plugged up drain trap not allowing the pressure switch to make.

No heat on furnace. Furnace had a plugged up drain trap not allowing the pressure switch to make.

Heather D.

Heather D. Job Checkin

Cold days make for a VERY BUSY STAFF!! Phones are ringing with the single digits outside🥶🥶🥶 Brrrr....everyone stay warm today👍🏻

Cold days make for a VERY BUSY STAFF!! Phones are ringing with the single digits outside🥶🥶🥶 Brrrr....everyone stay warm today👍🏻

Trent G.

Trent G. Job Checkin

Furnace no heat