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HEATING SYSTEMS
Heating Systems Today
Vast improvements in technology have given us many choices for heating
systems that may not have been available when your present furnace was
installed. The summary below should help you understand what is
available today.
Furnaces are available in two basic categories, 80% and 90%+
condensing furnaces. Efficiencies are measured by a term referred to
as AFUE. AFUE stands for Annual Fuel Utilization Efficiency. AFUE is
the standard by which manufacturers rate the efficiency of their
furnaces.
Thanks to new technological enhancements, the Lennox G71P
constantly monitors and automatically adjusts fan speed, heat and
airflow capacity demands to match the space requirements of your home
- without over-conditioning or wasting energy. It goes beyond
typical low and high two-stage operation, varying output from 40% to
100% in increments as small a 1%. Because the G71P is so precise, your home
stays perfectly comfortable on milder days, the coldest days, and
every day in between.
Three-stage modulating gas valve is a highly reliable, proven design
that operates up to 95% AFUE at 40%, 65%, and 100% firing rates. The
Trane XC95 communicating furnace, featuring our
advanced ComfortLink™ II communications capability, offers comfort,
enhanced reliability and so much more -- including remote monitoring
by phone*. Delivering ENERGY STAR® qualified efficiency of up to 95.0%
AFUE, the XC95 features three stages of heat, along with three-wire
connectivity for faster installation and a communicating user
interface for simple setup and maintenance, all in all, an innovative
heating solution.
95% Variable-Speed Furnace – The variable-speed 95% efficient furnace
is the most cost effective, quietest furnace on the market. The
variable speed technology will also add up to a full Seer point on the
efficiency of you air conditioning system.
92 – 94% Two-Speed Gas Furnace – As in the 80% two-speed furnaces
these furnaces run at the lower speed most of the time saving energy
dollars, keeping the house more comfortable, and remaining quiet while
heating your home.
90-92% Gas Furnace – These are the industry’s entry-level furnaces
into the high efficiency market. These are very dependable furnaces
and the most basic condensing furnaces available. Condensing furnaces
pull extra heat out of the combustion products that normally go up the
flue and are wasted to the atmosphere. 90% furnaces are much better
for the environment and generally have a lifetime warranty on the heat
exchanger.
80% Variable-Speed Gas Furnace – These furnaces are even more
effective at minimizing temperature differences in the home and are
the quietest furnaces available when in the low heat setting. The
reason variable speed furnaces are so popular is the amount of money
they will save on an energy bill. The energy efficient blower motor is
up to ten times more efficient than a standard furnace blower motor
and will save up to $300 a year on electricity costs with continuous
blower operation.
80% Two-Speed Gas Furnace – This furnace changes speeds as the demand
varies. Two-speed furnaces generally run on low speed 60 – 80% of the
time. The low speed setting allows the furnace to run longer, more
efficiently and quieter. Longer run times help to minimize the
temperature differences existing in the home.
80% Gas Furnace – This is the lowest efficiency allowed by federal
regulations and is the most basic furnace available.
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