80% to 95% AFUE Furnace Upgrade in a Fenton Modular Home

An 80% AFUE furnace means 20 cents of every dollar you spend on gas goes straight out the flue. That adds up fast - especially through a Michigan winter. This homeowner in Fenton knew it was time to stop paying for heat that was literally being wasted.

Here's what we were working with: an old 80% furnace crammed into a tight modular home closet, worn components, and a venting setup that was well past its prime. These older units were standard for their time, but they were never designed with efficiency in mind. Getting it out of that tight space and properly decommissioned takes more care than a standard install - modular homes have unique constraints that require a different approach.

The new 95% AFUE unit fits cleanly into the same space. The jump from 80% to 95% efficiency is significant. That 15-point difference means the homeowner is now getting almost all of their gas bill converted directly into heat instead of losing a big chunk of it out the exhaust. Over the course of a full heating season in Fenton, that kind of savings really starts to show up on the monthly bill.

Part of upgrading to a high-efficiency furnace is rerouting the venting. A 95% unit runs cooler exhaust gases, which means it uses PVC pipe instead of a traditional metal flue. We ran new PVC intake and exhaust lines through the roof - properly sealed and terminated so moisture and debris stay out. It's a clean, code-compliant setup that will hold up for years.

Modular home furnace work isn't something every HVAC contractor is set up to handle well. The space constraints are tighter, the venting runs are different, and getting the right fit matters. We do this regularly across the Fenton area and know exactly what it takes to get the job done right the first time.