The Dave Lennox Signature Collection XP21 heat pump is the top of the line from this well-respected manufacturer. It is very efficient and manufactured with components of the highest quality in the industry. Some question why it doesn’t have a lifetime limited warranty on the compressor, and perhaps a top-tier heat pump like this one should. The 10-year limited parts warranty is the average for the industry.
This energy-efficient heat pump has a 2-stage scroll compressor that delivers quieter, more efficient operation when heating and cooling. This Dave Lennox Signature Collection XP21 heat pump rating review will look at efficiency, features, and consumers ratings before providing an overall rating.
Efficiency: 
(4/5)
This highly-efficient heat pump qualifies as an Energy Star product with a 19.0 SEER rating for air conditioning and a 9.5 HSPF rating for heating. Both of these ratings will provide substantial energy savings in most homes, including a reduction in operating costs of as much as 50%. This unit may also qualify for tax credits and utility company rebates in your area.
Features: 
(4.5/5)
Homeowners will appreciate the 2-stage operation of the Dave Lennox Signature Collection XP21 heat pump. It runs on low most of the time, producing operating noise levels of just 67 decibels, among the lowest in the industry. The 2-stage compressor also provides better indoor climate control when it is matched with a variable-speed blower. This is achieved with the help of the Lennox IComfort touchscreen, programmable control that is an option on all Signature Series products.
Homeowners pursuing a greener lifestyle will also be interested to know that this model is equipped to handle SunSource solar technology. It is an affordable upgrade that allows the XP21 heat pump to run off of energy produced by PV solar panels. In addition, it uses R-410A refrigerant which does not contain chlorine and is not harmful to the environment.
A last feature that should be mentioned is the dual fuel capability of the Dave Lennox Signature Collection XP21 heat pump. In moderate and warm climates it may be paired with an air handler. In colder climates it can be paired with a gas furnace. This gives the system greater versatility and helps to keep energy costs lower in cold regions of the country.
User Rating: (5/5)
Lennox gets very high praise from consumers for energy-efficiency, quality and overall performance. If consumers have any issues with the Dave Lennox Signature Collection XP21 heat pump it is that it is quite expensive, costing more than many 19 SEER models on the market. However, its high user ratings are an indication that the price is justified to many consumers.
Overall Rating: (4.5/5)
Homeowners in the market for a high-efficiency heat pump with a stellar service and performance record often choose the Dave Lennox Signature Collection XP21 heat pump. It is an energy miser that allows you to create a very comfortable indoor climate 12 months out of the year. The hybrid heat capability and 19 SEER makes it a good choice in all climates. If you want a heat pump of the highest quality and don’t mind paying for it, the XP21 will meet high expectations.
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