Business Details
42 Years
experience
Emergency
services
Your Trusted HVAC Partner in Fenton, MO
Since 1984, Marciante Diversified has been a trusted provider of HVAC services for residential customers in Jefferson, St. Louis, and St. Charles counties. As part of the Watson Home Construction Family of Brands, we combine decades of expertise with a commitment to personalized service. Our licensed, insured, and bonded technicians specialize in heating, ventilation, and air conditioning maintenance, repair, and installation. We prioritize customer comfort through transparent pricing, 24/7 emergency availability, and a Family Promise guaranteeing quality workmanship. Our team stays current with industry advancements, offering solutions like Mitsubishi mini-split systems and REME HALO air purification technology.With over 35 years of local experience, we maintain a reputation for reliability, technical expertise, and exceptional customer care. Our focus remains on protecting homeowners' investments while ensuring year-round comfort. Customer testimonials consistently highlight our prompt response times, professional installations, and fair pricing structure. We serve as a trusted partner for both routine maintenance and urgent HVAC needs.
Services
HVAC Maintenance
System Repair
New Installations
Mini-Split Systems
Air Quality Solutions
Details
- Year established: 1984
Highlights and features
- 35+ years of local HVAC expertise
- 24/7 emergency service availability
- Transparent fixed pricing structure
- Factory-certified technician training
- Customer satisfaction guarantee
Associations and certifications
- Trane Certified Dealer
- Rudd Certified Dealer
What people say
Outstanding quality work
24/7 emergency response
Competitive pricing
Professional technicians
Excellent communication
Services
HVAC Maintenance
Our comprehensive maintenance service includes freon level checks, airflow optimization, capacitor testing, and thermostat battery replacement. Technicians perform thorough inspections of air handlers, filters, and drainage systems to ensure peak efficiency. Regular maintenance extends system lifespan while maintaining manufacturer warranties. This preventive care helps avoid unexpected breakdowns during extreme weather conditions.
Emergency Repairs
We provide urgent repair solutions for air conditioners, furnaces, and heat pumps with same-day response. Our technicians diagnose issues like refrigerant leaks, electrical failures, and component malfunctions. Service includes noise analysis, system diagnostics, and emergency part replacements. Customers receive priority scheduling during critical temperature conditions.
System Installation
As certified Trane and Rudd dealers, we install energy-efficient heating and cooling systems. Services include system sizing analysis, ductwork modifications, and smart thermostat integration. We specialize in mini-split installations and whole-home air purification systems. New installations come with manufacturer warranties and performance guarantees.
Questions
What HVAC services do you offer?
We provide complete HVAC solutions including system maintenance, emergency repairs, and installations for residential properties. Services cover air conditioning, heating, and indoor air quality systems.
Are you available for emergency service?
Yes, we offer 24/7 emergency HVAC service Monday through Saturday with no extra charges for after-hours visits.
What areas do you serve?
We serve Jefferson County, St. Louis County, and St. Charles County Missouri with local technicians available for prompt service.
Do you offer financing options?
Financing options are available for qualifying HVAC replacement projects. Contact our office for current financing programs and eligibility requirements.
What brands do you work with?
As certified dealers, we install Trane and Rudd systems. Our technicians service all major HVAC brands including Mitsubishi mini-split systems and REME HALO® air purifiers.
