- Dc90 Ultra High Efficiency Furnace
- Tempstar Dc90 Ultra High Efficiency
- Heil Dc90 Ultra High Efficiency Furnace Manual Transfer Switch
- Heil Dc90 Furnace Parts
If you are thinking of installing a natural gas furnace in your new home or replacing an existing system with natural gas heat, be aware of the importance of high efficiency furnace venting. The process of burning natural gas creates combustion gases as byproducts. For health and safety reasons, these combustion gases must be expelled through the furnace ventilation system out of your home.
A conventional natural gas furnace will vent the dangerous combustion gases through a simple vertical exhaust system that is attached to the furnace. The exhaust system typically uses metal venting, often routed into a chimney stack, to exhaust the combustion gases created in the furnace fire chamber. However, these combustion gases contain residual heat that is lost through the ventilation. You can capture that heat with a high efficiency condensing furnace.
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This is a counterflow furnace I turned into a 'trainer' so that other students could use it to experience and diagnose various faults. Likewise, an instructo. Thus, a high-efficiency condensing furnace can be identified by the presence of this drainage tube. Venting in High-Efficiency Furnaces The main difference between a conventional furnace and a condensing furnace is the heat exchanger technology used to extract heat from the combustion process and exhaust the combustion gases. Heil Gas Furnace Manual zeiss goheil! Product information hyster forklift manual h16xm heil dc90 ultra high efficiency furnace problems ultra manual tempstar heating & cooling manual brochures heil shimano flight deck computer manual other furnace sp80 owner/service manual.
A high efficiency condensing furnace can achieve efficiency ratings of 90 or above. It uses a venting system to extract that heat before venting. What is vented is a residual corrosive condensate of water and carbon dioxide. This residual liquid is highly acidic. It will ruin the standard venting equipment that is used in conventional gas furnace ventilation systems.
To avoid this problem, high efficiency furnace venting requires the use of PVC pipes instead of metal pipes to remove the acidic condensate from your home. These PVC pipes are connected to the furnace and expelled outside. This high efficiency venting system must be installed when you install the new furnace. The PVC pipes are used for air intake, exhaust gas, and to remove the corrosive condensation resulting from the combustion process.
Other Aspects of High Efficiency Furnace Venting
There are several other important aspects of high efficiency furnace venting. Most specifically:
Electronic Ignition
A high efficiency condensing furnace has an electronic ignition mechanism. It is a hot surface ignition system that uses an electronically controlled resistance heating element, similar to a light bulb filament. The hot surface of the heating element ignites the gas burner. It provides better performance and higher safety than a pilot light. It also provides energy savings due to its superior operating efficiency.
Special Furnace Venting and Drainage
As explained above, a high-efficiency condensing furnace has special venting and condensate drainage requirements. It also has special heat exchanger technology that is able to extract heat from the fuel combustion process for a longer period of time. It extracts heat even until the point where the combustion exhaust gases have cooled down and condensed. The resulting condensation drips out of the furnace’s heat exchanger and runs into a floor drain or special catch basin. The low-temperature residual flue gases vent outside through special plastic pipes.
Sidewall Venting
When your new high-efficiency condensing furnace is installed, your contractor should take extra precautions to make sure all ventilation systems are properly placed and working correctly. One of the most important safety features of gas-condensing systems is sidewall venting.
Proper sidewall venting requires installing separate vent pipes horizontally so that they vent to the outdoors through a wall of your home. These ventilation pipes should be isolated from the furnace combustion chamber and made airtight to eliminate the possibility of combustion gas leakage. They should be constructed so that any condensate in the pipes drains backward without freezing and drains into the floor drain or catch basin.
A high efficiency condensing furnace, if not properly ventilated, can present two safety hazards. First, the gas byproducts can contain residual carbon monoxide that could leak back into your home unless the ventilation pipes are airtight. Second, improperly venting the exhaust through a chimney (as frequently done with conventional gas furnace systems) can damage chimneys and chimney liners if it accumulates and freezes. Also, the acidic elements in the exhaust can damage unprotected chimney bricks and mortar. For these reasons, exhaust from a condensing furnace should never be vented through a standard chimney.
Two Heat Exchangers
High efficiency furnace venting uses two heat exchangers. (Conventional furnaces use only one.) They use a two-stage process. In the first stage, gas is burned to heat the first heat exchanger. After the first heat exchanger is heated, the second stage begins. In the second stage, the secondary heat exchanger extracts heat out of the hot exhaust gasses. This heat extraction process cools the exhaust gasses to the point that the water vapor in the exhaust gas condenses into water. Any resulting gas byproducts are cool enough to vent them outside through a PVC pipe. The condensed water is run to a floor drain.
Maintenance
Change The Air Filters Regularly
Change the furnace filters at least every three months. If you have pets, you should do it more frequently. A simple $1 fiberglass filter will protect the blower and blower motor. You can also buy special more expensive filters to filter out smaller particles. Be sure you check the owner’s manual for the manufacturer’s recommendations. The more powerful filters can put undue strain on your furnace by restricting airflow too much. Replace the return air filters. If you have a permanent-type filter, follow your manufacturer’s recommendations for cleaning it to remove dust and debris.
Make Sure Ventilation Pipes And Condensation Drains Are Unobstructed.
Keep the vent and drain pipes open. Check them regularly and remove any obstructions.
Schedule Regular Tune-ups With A Professional HVAC Contractor
Dc90 Ultra High Efficiency Furnace
A high efficiency condensate furnace can save you lots of money on your heating bills. However, you need to make sure the system is operating properly. If the condensate from a high efficiency furnace leaks out of the PVC pipes, or if the pipes are not draining the condensate correctly, you could experience damage to your home and you may not be aware of it until the damage becomes significant. A professional HVAC technician will ensure that your venting pipes are tightly secured and properly installed. The technician will also inspect your system and take care of any potential or minor problems before they become significant.
Tempstar Dc90 Ultra High Efficiency
Contact A Professional HVAC Contractor For More Information About Furnace Venting
Before you select a new furnace system, consider a high efficiency condensate furnace. Contact an experienced HVAC contractor for more information about high efficiency furnace venting as well as furnace installation, repair, or maintenance.
Buying a new gas furnace is worrisome enough without having to deal with the pressure of knowing you might be without heat for a few days in the winter months. In the sections below, we’ve provided a list of the best high efficiency gas furnaces for your home during the 2019 and 2020 heating season. They were selected for many reasons including cost, efficiency, comfort and features, as well as furnace brand, warranty and historical reliability.
Almost all of the best high efficiency gas furnaces below have the added benefit of being listed on the EnergyStar Highest Efficiency Gas Furnaces of 2020 selection. Going into the new year, many of these same furnaces were the best furnace in 2019 as well, so plan ahead and get the right furnace with a long life ahead. They all operate at above a 95% AFUE and when properly installed, and promise the most value for you home heating budget.
| Brand and Model | Features |
|---|---|
| American Standard Platinum 95 Gas Furnace |
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| Bryant 987M Evolution |
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| Carrier 59MN7 Infinity 98 Series |
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| Lennox SL297NV Ultra Series with iComfort |
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| Lennox SLP98V Series with iComfort |
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| Rheem Prestige R98V Series with EcoNet Control |
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| Trane XC95m Gas Furnace |
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High Efficiency Furnace Buying Guide
If you’re an energy and budget conscious consumer, buying one of the best high efficiency furnaces available should appeal to you. The new furnace cost is going to be higher than standard efficiency, but the annual operating costs are going to be significant lower than lower efficiency models. If you live in an area where you heat more than you cool your home, you’re going to save considerably every time the furnace runs!
This high efficiency furnace buying guide is her to help you understand features and performance. Hopefully, you too will realize the benefit of installing a high efficiency furnace.
Dual Chamber Heat Exchangers
Standard efficiency furnaces use a single tubular or ribbon style heat exchanger. High efficiency models use a multi-chamber heat exchanger, assuring that the fuel gets burned more efficiently and you get more value for your heating money.
Benefit: Dual, or Multi-chamber Heat Changers burn the fuel more efficiently.
Variable Speed Blowers / ECM Blowers
Standard furnaces use a single speed, or at most a multi-speed blower that allows you to manually set the amount of airflow in your duct system. High efficiency furnace use variable or modulated speed blowers, that automatically adjusts to the heating needs of your home and sends the right amount of airflow to keep the temperature perfect, or within 1 degree at all times.
Benefit: Variable or ECM blowers use less energy and keep the indoor air temperature at a much more comfortable setting. This helps avoid short/long cycling, and saves money on electricity.
Furnace Ignitors / Startup Systems
Older furnaces used to use pilot lights to fire off the furnace. Eventually that changed to hot surface ignitors, which are similar to a glow plug of sorts, providing the needed flame to ignite the gas coming out of the valve. Today’s high efficiency furnaces use an electronic ignition system that only sparks when the furnace is being lit.
Benefit: Electronic ignitors only fire as needed. They don’t glow and waste electricity, or burn non-stop wasting natural gas like a pilot system.
Multi-Stage and Modulating Gas Valves and Burners
Standard furnaces generally use single stage gas valves. This means they are on or off, flowing the same amount of natural gas all the time they are lit or burning.
Multi-stage or modulating gas valves can automatically sense how much heat you need based on the thermostat, and run at a lower or higher setting, based on the need in your home. If your thermostat only calls for a 2-degree rise in temperature, the valve will run on low, along with the lower speed fan, delivering the right amount of heated air to your home more efficiently.
Benefit: Instead of all-on like a single stag valve, 2 or more stage gas valves use much less gas making them much higher in efficiency.
Smart Communication Systems and Monitoring
Standard furnaces can use smart thermostats as well, but what they don’t do is communicate with them. High efficiency furnaces talk back and forth with their matching thermostat systems, reporting problems like an old air filter or airflow issues, high chamber temperatures, carbon monoxide dangers, and much more.
Benefit: Communicating furnaces are much more intelligent than standard. They operate at higher degrees of accuracy and provide feedback to homeowners, catching and reporting small problems before they turn into big problems.
High Efficiency Furnace Cost and ROI
Lets face it, high efficiency furnaces cost more at the point of initial purchase, as well as installation. In most cases, you’ll spend almost twice the money for a high efficiency furnace over standard.
However, when it comes to operating costs of a high efficiency furnace, you’re going to save anywhere from 15-35% in monthly fuel expense. So, if you normally spend $100/month in the heating system on natural gas, you can expect to save $20-$35/month on your heating expenses with a high efficiency furnace.
Adding to the benefit, is that high efficiency heating systems are known to last longer as well. So if you get 20 years out of a high efficiency furnace, you can expect to save additional money versus having to replace it sooner.
The exact savings are something you should review with your HVAC specialist before making a purchase. They’ll know exactly how much each therm of gas costs, be able to review your past heating bills, and tell you a fairly specific estimate of how much a high efficiency furnace will save you each year.
** Costs below include installation as well as a matching smart thermostat. They do not include central ac, accessories, etc.
Heil Dc90 Ultra High Efficiency Furnace Manual Transfer Switch
| Size (BTU’s) | Standard Efficiency | High Efficiency Cost |
|---|---|---|
| 40,000 – 60,000 | $2,190 Installed | $3,850 Installed |
| 60,000 – 80,000 | $2,720 Installed | $4,390 Installed |
| 80,000 – 100,000 | $3,280 Installed | $5,150 Installed |
| 100,000 – 120,000 | $3,690 Installed | $5,900 Installed |
Where You Live Makes a Big Difference
Regardless of where you live in the USA, you’ll benefit from installing a high efficiency gas furnace. That said, it makes much more sense if you live in an area that uses heat more often.
Minimal Benefit / Lowest ROI – Places like Florida, Louisiana, and other states where heat is rarely used. Yes, you’ll still benefit from the high efficiency, but the initial expense will be hard to reclaim, due to lower usage.
Heil Dc90 Furnace Parts
Maximum Benefit / Highest ROI – Areas that use heat more than 4 months out of the year, will get the highest ROI from a high efficiency gas furnace. The simple reason for this is that you heat more often and thus save more money on fuel expense, reclaiming the higher cost a little bit each month the furnace is in use.