Markl & Sons Cooling & Heating
TDLR-Licensed A/C Contractor · License 4294
Markl & Sons Cooling & Heating holds 3 Texas air conditioning and refrigeration contractor licenses from TDLR (4294, 17682 and 111584).
TDLR records Donald Norbert Markl, John Leonard Markl and Donald Randolph Markl as the licensed individuals.
The first license runs through May 26, 2027, per TDLR.
On Google, the business address is 119 E Brockett St, Sherman, Grayson County.
Its Google rating is 4.7 out of 5 (111 reviews).
License record
| TDLR license | 3 A/C and refrigeration contractor licenses: 4294, 17682, 111584 |
|---|---|
| Licensed individuals | Donald Norbert Markl, John Leonard Markl, Donald Randolph Markl |
| License expires | May 26, 2027 |
| County in the license file | Grayson County |
| Location | 119 E Brockett St, Sherman, 75090 |
| Google rating | 4.7 out of 5 from 111 reviews |
| Hours (Google) | Open 24 hours, every day |
| Website | marklandsons.com |
| Google Maps | View on Google Maps |
Source: TDLR air conditioning and refrigeration contractor license file (dated 10/14/2026); Google listing match verified. Verify the license at tdlr.texas.gov before hiring.
Compare the 18 A/C contractors and mold companies in Sherman, with their TDLR license records and Google ratings.
Other TDLR-licensed A/C contractors listed in Sherman: Service Mule LLC, Alpine Air Conditioning & Heating, Gus & Gus HVAC, LLC, Osbourn Air & Appliance Repair.