The Best HVAC in Saint Johns, FL

Compare the highest-rated hvac professionals in Saint Johns, Florida. All contractors are licensed, insured, and verified through our rigorous screening process.

#1

St. Johns Climate Control Experts

4.8
(142 reviews)
Verified

Full-service HVAC contractor specializing in high-efficiency systems designed for Florida's humid climate. Offers comprehensive installation, maintenance, and repair services with a focus on energy-efficient solutions and indoor air quality improvements.

245 State Road 210, Saint Johns, FL 32259

Specialties & Features

Energy Efficiency Upgrades
24/7 Emergency Service
Humidity Control Systems
Premium HVAC Brands

Business Information

Years in Business:15 years
Licensed:Yes
Insured:Yes
#2

First Coast Heating & Air

4.6
(118 reviews)
Verified

Local HVAC specialists with extensive experience serving St. Johns County. Known for reliable emergency repair services and expert installation of high-performance cooling systems specifically engineered for Florida's extreme summer heat and salt air conditions.

189 County Road 210 West, Saint Johns, FL 32259

Specialties & Features

Emergency HVAC Services
Coastal Climate Systems
Ductwork Design & Sealing
Furnace Installation

Business Information

Years in Business:12 years
Licensed:Yes
Insured:Yes
#3

Sun State Air Conditioning & Heating

4.5
(96 reviews)
Verified

Family-owned HVAC company providing comprehensive heating and cooling services with special expertise in preventive maintenance programs designed to extend system lifespan in Florida's demanding climate conditions.

321 Racetrack Road NW, Saint Johns, FL 32259

Specialties & Features

AC Maintenance Plans
System Replacement
Indoor Air Quality
Smart Thermostat Installation

Business Information

Years in Business:8 years
Licensed:Yes
Insured:Yes

Why These Are the Top HVAC Contractors in Saint Johns

Saint Johns' HVAC market is characterized by high demand due to the humid subtropical climate with hot summers and mild winters. The coastal location requires systems resistant to salt air corrosion. Premium efficiency systems are particularly valued given year-round cooling needs and high electricity costs during summer months. The market features both national franchises and established local providers competing on service quality and climate-specific expertise.

High Ratings

4.7+ star average from verified customer reviews

Fully Licensed

All contractors are properly licensed and insured

Proven Experience

10+ years average experience in the industry

Local Experts

Familiar with Saint Johns regulations and climate

Frequently Asked Questions About HVAC in Saint Johns

Get answers to common questions about hvac services in Saint Johns, Florida.

1What is the typical cost range for replacing an HVAC system in Saint Johns, and what factors influence the price?

In Saint Johns, a full HVAC system replacement typically ranges from $5,000 to $12,000 or more, heavily influenced by system size (measured in tons), efficiency rating (SEER), and brand. Key local factors include the need for high-SEER units (16+ is recommended) to handle our intense summer heat efficiently, and potential additional costs for improving indoor air quality due to local pollen and humidity. The complexity of the installation, such as ductwork modifications or the need for a more powerful air handler to manage humidity, also significantly impacts the final price.

2When is the best time of year to schedule HVAC maintenance or replacement in Saint Johns, FL?

The absolute best time is during our mild fall and spring seasons (October-November or February-March), before the peak demand of summer. Scheduling during these off-peak periods ensures greater availability from local HVAC companies, often leads to faster service, and may provide opportunities for promotional pricing. Most critically, it ensures your system is fully serviced and reliable before the punishing heat and humidity of a Saint Johns summer arrive, preventing emergency breakdowns.

3Are there any specific local regulations or considerations for HVAC installation in Saint Johns, Florida?

Yes, installations must comply with the Florida Building Code and Saint Johns County permitting requirements, which often mandate specific wind-load ratings for outdoor units due to our hurricane risk. Furthermore, Florida has a statewide Title 17 refrigerant regulation, requiring proper recovery of old refrigerant during replacement to prevent environmental harm. Always verify your chosen contractor is licensed (Florida Certified Mechanical Contractor license #CMC) and pulls the required county permits to ensure your installation is safe, legal, and up to code.

4How do I choose a reliable HVAC contractor in Saint Johns, and what red flags should I watch for?

Choose a contractor who is locally established, holds a valid Florida CMC license, and provides detailed, written estimates. Look for strong reviews specific to Saint Johns/St. Johns County and ask for references from recent installations. Major red flags include refusing to provide a written quote, pressuring for immediate payment, quoting a price drastically lower than others (which may indicate subpar equipment or improper licensing), and not discussing the importance of proper system sizing (Manual J calculation) for our climate.

5My HVAC system runs constantly in the summer but doesn't cool my Saint Johns home adequately. What's the most likely cause?

The most common causes in our climate are a refrigerant leak, a failing compressor, or an undersized/aging system struggling with the extreme heat load. However, a frequently overlooked issue specific to our high humidity is a dirty or frozen evaporator coil, which severely reduces cooling capacity and dehumidification. First, check and replace your air filter, ensure outdoor unit coils are clean and unobstructed, and then contact a professional for a diagnostic, as continuous operation under these conditions can lead to complete system failure.