Day and Night AC units are among the most affordable on the market. They have a relatively small range of basic air conditioners, called the Performance range, some slightly more advanced units in the Constant Comfort series. Their elite products (those with the highest efficiency and most features) are called the Constant Comfort Deluxe. Due to the fact that the brand has two sister brands, the products within the Day and Night range are all also available under different branding. There are also occasionally issues with certain locations getting Day and Night models.

Sister Brands
Day and Night is owned by United Technologies, which owns a huge amount of other businesses. It has dealings in all kinds of different industries and by owning three brands in the air conditioner space, it has a huge chunk of the HVAC market, too. As well as Day and Night, the United Technologies holding company also owns Carrier and Bryant. Some of the products in the brand can be bought under different branding as Carrier or as Bryant HVACs.
Day and Night has actually been owned by Carrier in the past, but Carrier stopped using the brand in 1999. It was brought back into production with a new range by International Comfort Products back in 2009. ICP also own products such as Heil, and many of the Day and Night products are also very similar to Heil branded products.
What is the Difference Between Carrier, Bryant and Day and Night?
Out of the brand of 17 models made by Carrier and Bryant, 16 of them are exactly the same. Of these, Day and Night have five products which overlap with the Carrier/Bryant models.
The Day and Night Brand
There isn’t a huge amount of brand history with Day and Night beyond what is above. The main information is that every unit that the factory produces is tested for energy efficiency and reliability. They are also run tested, meaning every unit has been turned on and checked before being shipped.
It is fair to say that it is not an elite brand. However, they have some products which are good value and can do a decent job. The entire range has Energy Star rating so the environmental and energy use is better than government regulations state it has to be.
Day and Night Pros and Cons
Pros
Cons
Model Comparison
Series | Model | SEER | Sound (decibel) | Compressor |
---|---|---|---|---|
Deluxe | CVA9 | 19 | 56 | Two-Stage |
Deluxe | CCA17 | 17 | 70 | Two-Stage |
Constant Comfort | CSA6 | 16 | 69 | Single-Stage |
Constant Comfort | CSA5 | 15 | 74 | Single-Stage |
Constant Comfort | C4A3 | 13 | 71 | Single-Stage |
Performance | N4A7 | 17 | 71 | Single-Stage |
Performance | N4A6 | 17 | 71 | Single-Stage |
Performance | NXA6 | 16 | 75 | Single-Stage |
Performance | N4A5 | 14 | 75 | Single-Stage |
Performance | N4A4C | 14 | 71 | Single-Stage |
Performance | NH4A4 | 14 | 66 | Single-Stage |
Performance | NXA4 | 14 | 75 | Single-Stage |
Performance | N4A3 | 13 | 74 | Single-Stage |
As you can see from this model comparison, there are a lot of different options in the market, a lot of which are quite similar in terms of features. There is a huge variation in terms of the products and their features. For instance, there are products in the range such as the N4A5 which is 75 dB, compared to the NH4A which has the same SEER rating, but isn’t anywhere near as noisy at 66 dB.
Day and Night Technologies
Smartsense and Observer Technology
These are two technologies which work hand-in-hand in the deluxe Day and Night air conditioners to create more efficient cooling. So, how does it work?
Most air conditioners and other HVAC products cause fluctuations in temperature. They have air cycles which work in short spells, designed to force the temperature you have set, but this means that there is some level of fluctuation. The Smartsense website compares it to a car in a traffic jam, constantly stopping and starting.
Smartsense technology makes these cycles a lot longer and can introduce tiny changes to deliver the right temperature and ensure you’re always at a comfortable and consistent temperature.
Ion™ System Control with Wi-Fi capability
This is the system which allows Day and Night models such as the Constant Comfort Deluxe 19 Air Conditioner to be a part of your Wi-Fi network. This means they can regularly connect to the wifi for checks and alert you if they need maintenance. It also allows you to control your air conditioning unit from a phone or tablet.
Price and Running Cost Comparison for Day and Night Models
Series | Model | Price (Model Only) | Price (Installed) | Running Cost |
---|---|---|---|---|
Deluxe | CVA9 | $2,899 | $4,643 | $490 |
Deluxe | CCA17 | $2,579 | $4,300 | $529 |
Constant Comfort | CSA6 | $2,100 | $3,947 | $557 |
Constant Comfort | CSA5 | $1,973 | $3,874 | $604 |
Constant Comfort | C4A3 | $1,953 | $3,788 | $612 |
Performance | N4A7 | $1,800 | $3,592 | $649 |
Performance | N4A6 | $1,750 | $3,300 | $659 |
Performance | NXA6 | $1,700 | $3,290 | $670 |
Performance | N4A5 | $1,659 | $3,090 | $705 |
Performance | N4A4C | $1,590 | $3,000 | $729 |
Performance | NH4A4 | $1,550 | $2,980 | $770 |
Performance | NXA4 | $1,450 | $2,700 | $794 |
Performance | N4A3 | $1,190 | $2,490 | $820 |
This table has compared 2.5 ton units, though the units within the Day and Night range are available between 1.5 and 5 tons. This measurement relates to the BTUs it is able to shift.
The table also has info on running costs. This is an estimate, based on 13¢ payment per kWh for electricity payments.
Prices of HVAC units do vary depending on who you get to install, and where in the world you are located.
The Best Day and Night AC Units
Undeniably, the best in the range is the Constant Comfort™ Deluxe 19 Air Conditioner. This combines SmartSense and the Ion System control technology, and has a brilliant 10-year warranty. The 19 SEER means that this a pretty efficient model, the most energy efficient within the range, and therefore it is well suited to areas where you need to use your air conditioner a lot. The economy means that if it sees a lot of use then it will save money on energy consumption. This is also a very quiet model and can operate as quietly as 56 dB.
If you need a single-stage option instead of a double-stage, you might opt for the CSA6, which still has the Observer communicating system. However, the warranty is only five-years (10-years for parts). This is a decent economy at 16 SEER, and has the Energy STAR rating, but is best for homes that don’t need to use their air conditioner on a day-to-day basis.
Finding a Trusted Day and Night Installer and Getting the Best Price
To find an installation company, and get the best price:
- Use our free estimate tool in order to see an estimation of what the installation process should cost in your area. Free estimates help to give a frame of reference when negotiating or discussing with installers.
- Always get multiple quotes from multiple companies. This way, you can choose the best price, safe with the protection that Trane only deal with well-qualified installers.
- Stay on top of local rebate schemes. Some Day and Night models will qualify for some sort of rebate from an energy company or local scheme. Rebates are offered based on SEER rating and efficiency.