Professional Furnace Installation in Friendswood, TX

Replacing a furnace on the Gulf Coast isn't the same decision it would be in Dallas or San Antonio. Galveston's mild winters, salt air environment, and unique home construction — pier-and-beam builds, flood-zone elevations, homes that were never plumbed for gas — all change what makes sense for your home. The wrong system or a standard inland installation will corrode faster, cost more to maintain, and underperform in conditions it wasn't built for. Coastal Eco Heating & Air provides free estimates on all furnace installations across Galveston Island, Texas City, League City, Dickinson, La Marque, and Santa Fe, with every install built for the salt air environment.

A new furnace in Galveston runs between $3,500 and $10,000 or more depending on the system type, size, and complexity of the installation. That range depends on several factors specific to Gulf Coast homes — whether you're going electric or gas, replacing an existing system or installing from scratch, and how much corrosion protection the installation requires.

Electric vs. Gas Furnaces on the Island

Electric furnaces are far more common in Galveston than gas. Many island homes — especially those built on piers or in flood-zone construction — were never plumbed for natural gas. CenterPoint Energy delivers gas to parts of the island, but a significant number of homes rely entirely on electric. If your home doesn't have an existing gas line, the cost to run one can add $1,500 to $3,000+ to a gas furnace installation, which changes the math considerably.

Electric furnaces range from $3,500 to $6,000 installed for most residential applications. They're simpler systems — heating elements, a blower, sequencers, and a control board. No combustion, no flue, no gas line. For Galveston's mild winters, where you might run heat 30 to 50 days a year, an electric furnace handles the job without the complexity of gas.

Gas furnaces run $5,000 to $10,000+ installed, with higher-efficiency condensing models (95%+ AFUE) at the top of that range. They heat faster and cost less per BTU to operate, but the short heating season in Galveston means the efficiency savings take longer to recoup compared to a home in Dallas or Houston that runs heat four to five months a year.

Why Heat Pumps Deserve Consideration

Before committing to a furnace-only installation, Galveston homeowners should seriously consider a heat pump. Galveston winters rarely drop below 40 degrees for extended periods, and heat pumps operate at peak efficiency in exactly that temperature range. A heat pump heats in winter and cools in summer with one system — no separate furnace and AC unit. For a coastal home that uses heat two to three months a year, the dual-function efficiency of a heat pump often makes more financial sense than a standalone furnace.

If you already have a heat pump and it's reaching end of life, replacing it with another heat pump is almost always the right call. We'll walk you through the options during a free estimate.

Corrosion-Resistant Coastal Installation

This is where Galveston installations diverge from what you'd get inland. Every furnace we install on the island or in surrounding Gulf Coast communities includes corrosion-resistant components: coated electrical connections, marine-grade wire nuts and terminals, sealed control boards where available, and weatherproof disconnect boxes. The outdoor components of any paired system — condensers, heat pump units — get coated coil options and corrosion-resistant hardware.

Standard installations from companies that don't specialize in coastal work use the same components they'd put in a home in Katy or Sugar Land. Those parts corrode in Galveston's salt air three to five times faster. The upfront investment in corrosion-rated materials pays for itself in fewer repairs and a longer system life.

What's Included in the Installation

A furnace installation from Coastal Eco includes the unit itself, thermostat upgrade if needed, all electrical and gas connections, ductwork modifications if required, a full system test, and a post-install inspection. We pull all required permits through the City of Galveston or the relevant jurisdiction for mainland installs. Every installation includes a manufacturer warranty plus our labor guarantee.

Getting a Free Estimate

Call (409) 599-1948 or schedule online. We'll send a technician to evaluate your home, measure your space, assess your existing ductwork, and give you a written estimate with clear pricing — electric furnace, gas furnace, or heat pump options. No pressure, no inflated quotes designed to push you toward financing. Just honest numbers for your specific home.