Business Details
50+ Years
experience
Emergency
services
Open 24/7
always available
Trusted HVAC & Plumbing Services in Frederick, MD
Since 1937, Warner Service has been synonymous with quality, dependability, and integrity in HVAC and plumbing services. As a family-owned business operating for three generations, we prioritize customer satisfaction through honest business practices and experienced technicians. Our commitment to using high-quality products and maintaining transparency in all dealings has solidified our reputation as a trusted provider in the Frederick, MD area. We offer 24/7 emergency services and background-checked employees to ensure reliability and peace of mind for every client. 
Services
AC Repair
Heating Installation
Plumbing Services
Water Heater Replacement
Emergency Repairs
HVAC Maintenance
Boiler Services
Drain Cleaning
Commercial HVAC
Ductless AC
Details
- Year established: 1937
Highlights and features
- 24/7 emergency service since 1937
- Family-owned with three generations of expertise
- Free estimates on replacements and installations
- Background checks for all employees
- 80+ years of HVAC and plumbing experience
Associations and certifications
- MD Plumbing License #62827
- MD HVACR License #7196
- Frederick County Plumbing License #PM272796
- Washington County Plumbing License #PL-M-1021
- VA HVACR License #2710063142
- WV Contractor License #WV010635
- WV Plumbing License #PL07269
- PA Home Improvement Contractor License #PA191369
What people say
Prompt service
Professional technicians
Transparent pricing
Reliable solutions
Exceptional follow-up
Services
HVAC Installation
Our expert technicians provide comprehensive HVAC installations for residential and commercial properties. We assess your space to recommend energy-efficient systems that match your comfort needs and budget. From traditional central air to ductless mini-split systems, we ensure proper sizing and optimal performance. Our team handles everything from permits to final testing, guaranteeing seamless integration with your existing infrastructure while maximizing energy savings and indoor air quality.
Emergency Plumbing
We offer round-the-clock emergency plumbing services for urgent issues like burst pipes, severe leaks, and water heater failures. Our rapid response team arrives equipped with advanced diagnostic tools and repair materials to minimize property damage. Technicians prioritize water damage prevention while implementing lasting solutions for pipe repairs, drain clearing, and fixture replacements. Service calls include thorough system checks to identify potential future issues during emergency visits.
Water Heater Replacement
Our specialists install high-efficiency water heating solutions including tankless, gas, and electric models. We evaluate your household's hot water demands to recommend appropriately sized units with energy-saving features. The installation process includes proper venting, pressure regulation, and integration with existing plumbing systems. We provide detailed usage guidance and maintenance schedules to maximize system longevity while ensuring consistent hot water supply for residential and commercial clients.
AC Repair
We diagnose and repair all types of air conditioning systems with same-day service availability. Our technicians use precision diagnostic equipment to identify refrigerant leaks, compressor issues, and electrical malfunctions. Repairs include component replacement, refrigerant recharging, and airflow optimization. Preventative maintenance packages feature coil cleaning, filter replacement, and system efficiency testing to maintain peak performance and extend equipment lifespan while reducing energy consumption.
Boiler Services
Our team specializes in boiler maintenance, repair, and installation for both residential and commercial properties. We service steam and hot water boiler systems with expertise in older units requiring specialized care. Maintenance includes combustion efficiency testing, pressure checks, and safety valve inspections. Installations feature proper venting, piping configuration, and integration with existing heating distribution systems to ensure reliable operation and energy efficiency improvements.
Questions
Do you offer emergency HVAC services?
Yes, we provide 24/7 emergency HVAC and plumbing services with rapid response times.
What areas do you service?
We serve Frederick, Hagerstown, Boonsboro, and surrounding areas in MD, VA, and WV.
Are financing options available?
Yes, we offer flexible financing through GreenSky and Optimus for HVAC and plumbing projects.
How can I schedule maintenance?
Call (301) 304-7429 or visit our website to sign up for HVAC or plumbing maintenance plans.
What HVAC brands do you work with?
We specialize in Daikin systems and service all major HVAC brands for repairs and installations.
