In this podcast, Reuben and Tessa discuss the problems with chimneys and the venting of exhaust gases from appliances. It highlights the issues with older masonry chimneys and the need for proper venting with more efficient appliances. They also discuss the importance of chimney liners for gas appliances in older homes. They highlight the potential dangers of not properly venting gas appliances and the risk of condensation and chimney deterioration. They emphasize the need for HVAC contractors to go beyond simply connecting appliances to the chimney and to ensure proper venting. The conversation concludes with a reminder for homeowners to consider the potential unintended consequences of upgrading their heating systems in older homes.

Takeaways

Older masonry chimneys are not suitable for venting more efficient appliances
Clay tile liners protect the chimney from corrosion
Condensation and back drafting can occur when the chimney is not properly heated
Modifying the chimney is necessary to accommodate the lower heat output of newer appliances HVAC contractors often need to pay more attention to properly vent gas appliances, leading to potential problems with condensation and chimney deterioration.
Installing a chimney liner is necessary for gas appliances in older homes to reduce condensation and ensure proper venting.
The cost of installing a chimney liner can vary depending on the height and accessibility of the chimney.
In some cases, it may be more cost-effective to install a power vent water heater instead of lining the chimney.
Homeowners should know the potential unintended consequences of upgrading their heating systems in older homes.

Chapters

00:00 Introduction and Background
04:59 The Dangers of Improper Venting
08:40 The Importance of Awareness and Education
09:58 Efficiency of older and newer appliances
10:33 Preventing Chimney Venting Issues
11:54 Chimney temperature and exposure to elements
14:40 Dangers of condensation and back-drafting
15:44 The need for chimney liners
20:29 Installing metal liners
24:55 Power vent as an alternative to liners
27:12 Unintended consequences of energy efficiency upgrades
29:19 Importance of hiring a chimney contractor