Johnstone Supply

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About Johnstone Supply
Johnstone Supply operates out of Amarillo as a heating equipment supplier serving residential and light commercial customers across the Texas Panhandle. The location holds a 4.7-star rating from 12 verified reviews, reflecting consistent satisfaction among contractors and homeowners who source parts and equipment here. Beyond Amarillo proper, the store serves Canyon, Borger, and surrounding communities in Potter and Randall counties. The shop maintains weekday hours from 8 AM to 5 PM, with Saturday availability until noon, closed on Sundays.
This location distinguishes itself as a comprehensive HVAC equipment distributor carrying both residential and commercial lines. The inventory encompasses single-packaged units, split systems, mini-split configurations including multi-zone and variable capacity options, gas and oil furnaces, air handlers, evaporator coils, and manufactured housing solutions. Extended warranties are available on select residential unitary equipment. The store also stocks field-installed accessories, supporting contractors who need specialty components for custom installations.
Customer reviews highlight specific technicians who deliver problem-solving service. Cade Barrett describes how staff helped him source a capacitor and aftermarket fan motor for an aging AC unit, walking him through pig-tailing the old wiring harness. Shane assisted another customer over the phone with minimal information to identify the correct part. Ernest Sanchez found an exact-match condenser fan motor and blades at reasonable cost. Multiple reviewers note Saturday availability proved crucial when their systems failed during peak summer heat.
What Customers Say
8 of 8 reviewers awarded 5 stars, with multiple customers specifically naming staff members (Shane, Heath) who provided knowledgeable assistance. Common themes across positive reviews include finding parts for older units other suppliers could not locate, fair pricing, and helpful guidance on installation procedures.
Working Hours
| Sunday | Closed |
| Monday | 8 AM–5 PM |
| Tuesday | 8 AM–5 PM |
| Wednesday | 8 AM–5 PM |
| Thursday | 8 AM–5 PM |
| FridayToday | 8 AM–5 PM |
| Saturday | 8 AM–12 PM |
Services
HVAC Equipment Sales
Full line of heating and cooling equipment including furnaces, AC units, heat pumps, and packaged systems for residential and light commercial applications.
Mini-Split Systems
Single-zone, multi-zone, and variable capacity mini-split configurations for zoned comfort solutions.
Split System Installation Components
Evaporator coils, air handlers, installation accessories, and field-installed components for custom installations.
Manufactured Housing HVAC
Specialized heating equipment designed for manufactured homes and mobile housing units.
Commercial HVAC Units
Commercial-grade single packaged units and split systems sized for light commercial applications.
Parts & Replacements
Replacement components including fan motors, capacitors, condenser fan blades, and aftermarket alternatives for aging systems.
Extended Warranties
Optional extended warranty coverage available on select residential unitary equipment purchases.