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 maintenance, repair, and installation services in Jefferson and St. Louis County. Our licensed, insured, and bonded technicians prioritize protecting your home investment while ensuring year-round family comfort. With over 35 years of local expertise, we offer 24/7 emergency support Monday through Saturday, transparent fixed pricing, and a commitment to resolving issues correctly on the first visit. Our team specializes in air conditioning, heating systems, and air quality solutions, serving residential clients with professionalism and reliability. We stand behind our work through the Family Promise guarantee, ensuring customer satisfaction with every service. Our partnerships with leading brands like Trane and Rudd enhance our ability to deliver high-quality, energy-efficient systems tailored to homeowners' needs.Customer testimonials highlight our attention to detail, timely responses, and respectful technicians who maintain clean work environments. As part of the Watson Home Construction Family of Brands, we combine corporate resources with personalized service to meet diverse HVAC requirements. Our maintenance protocols include comprehensive system checks for optimal performance, while installation processes prioritize efficiency and safety. This combination of experience, technical expertise, and customer-centric values establishes Marciante Diversified as a regional leader in residential HVAC services.
Services
HVAC Maintenance
Emergency Repairs
System Installations
Mini-Split Systems
Air Quality Solutions
Details
- Year established: 1984
Highlights and features
- 35+ years of local HVAC expertise in Jefferson & St. Louis County
- 24/7 emergency service with no after-hours fees
- Transparent fixed pricing for all HVAC services
- Factory-certified technicians for major HVAC brands
- Family Promise guarantee for first-time repairs
Associations and certifications
- Trane Certified Dealer
- Rudd Certified Dealer
What people say
Prompt emergency response
Quality installations
Professional technicians
Clean workspaces
Transparent pricing
Services
HVAC Maintenance
Our comprehensive HVAC maintenance includes freon level checks, airflow verification, capacitor testing, and thermostat battery replacements. Technicians perform thorough inspections of air handlers, filters, and drainage systems to prevent breakdowns. Regular maintenance ensures optimal efficiency and extends system lifespan while maintaining manufacturer warranties.
Emergency Repairs
Available 24/7 for urgent HVAC issues, our certified technicians diagnose and repair system failures promptly. Services include refrigerant leak detection, component replacements, and power restoration for air conditioners, furnaces, and heat pumps. Emergency service maintains comfort during extreme weather conditions without additional after-hour charges.
System Installations
As Trane and Rudd certified dealers, we install energy-efficient heating and cooling systems tailored to home requirements. Our process includes system sizing calculations, ductwork modifications, and proper refrigerant charging. Installations follow manufacturer specifications to ensure performance and warranty validity.
Mini-Split Systems
We specialize in Mitsubishi mini-split system installations for zone-specific climate control. Services include indoor/outdoor unit placement, refrigerant line installation, and smart thermostat integration. Mini-splits provide efficient heating and cooling solutions for room additions or homes without existing ductwork.
Air Quality Solutions
Our REME HALO air purification systems eliminate contaminants and improve indoor air quality. Installation includes whole-home purification units and electronic air cleaner replacements. These solutions benefit allergy sufferers and enhance overall respiratory health through advanced filtration technology.
Questions
What HVAC services do you offer?
We provide complete HVAC services including maintenance, emergency repairs, system installations, mini-split solutions, and air quality improvements for residential properties.
Are you available for emergencies?
Yes, our 24/7 emergency service operates Monday through Saturday with no additional after-hour fees for urgent HVAC issues.
Which areas do you service?
We serve Jefferson County, St. Louis County, and St. Charles County with comprehensive HVAC solutions for residential customers.
How do you price your services?
We use transparent fixed pricing for all services with no hourly charges, ensuring you know costs upfront before any work begins.
What HVAC brands do you work with?
As certified dealers, we specialize in Trane and Rudd systems while maintaining expertise across major HVAC brands for repairs and installations.
Do you guarantee your work?
Yes, our Family Promise guarantee ensures all repairs are completed correctly on the first visit with follow-up support if needed.
