Questions and answers
Straight answers on cooler motors, sizes, blades, rates, warranty and our solar work.
Ordering and rates
Who makes NEXPOWER cooler motors?
NEXPOWER INFRA PRIVATE LIMITED winds, assembles and tests its cooler motors at its own unit in Sanjay Colony, Sector 23, Faridabad, Haryana. The aluminium end shields are CNC machined in-house.
What is the minimum order?
The minimum order is 50 pieces per model. Rates on this site are per piece, ex-GST, for that quantity and above.
Do you sell single motors to retail customers?
No. We supply dealers, distributors, cooler manufacturers and repair wholesalers. For a single motor please ask your local dealer for NEXPOWER.
Is the winding copper or aluminium?
Standard production is aluminium winding, which is what the cooler trade runs on at this price point. Copper winding is made to order. Tell us which you need when you ask for the rate.
How fast do you dispatch?
Stock models are dispatched within 48 hours of order confirmation. Transport is arranged to the buyer's account and tracking is shared on WhatsApp.
Is GST included in the rates?
No. Rates are ex-GST. 18% GST is added on the invoice.
Can I get my own brand label on the motor?
Yes, on OEM quantities. Share the quantity and label artwork on WhatsApp.
What warranty do the motors carry?
A 2-season replacement warranty, about 12 months from invoice, against manufacturing defects. Damage from a wrong blade or voltage is not covered.
Choosing a motor
What does 32 mm mean on an H-Frame cooler motor?
It is the stack size: the height of the stamping pack in the stator. H-Frame motors all use the same 139 mm stamping; a 35 or 38 mm stack has more iron and copper/aluminium than a 32 mm and drives a heavier blade.
Which H-Frame motor suits an 18 inch cooler?
The 32 mm stack is the standard fitment for an 18 inch desert cooler. For 20 to 24 inch blades or coolers that run all day, buyers usually move to 35 or 38 mm.
Why choose an aluminium body cooler motor?
Aluminium conducts heat far better than a painted steel shell and the fins add surface area, so the winding runs cooler under the same load. That matters most on big blades and long running hours.
Does the 44 mm motor fit a standard H-Frame cooler body?
It uses the H-Frame mounting, but the body is longer than a 32 mm motor. Share your cooler body size on WhatsApp and we confirm before you order.
Is the blue H-Frame motor different inside?
No. Stamping, winding, rotor and bearings are the same as the black H-Frame of the same stack size. Only the shell finish differs.
Can you supply the motor in our brand colour or with our label?
For OEM quantities we supply with your label. Share the quantity and artwork on WhatsApp.
What is the difference between E-Frame and H-Frame cooler motors?
The E-Frame uses a smaller 120.4 mm stamping against 139 mm on the H-Frame, so it is lighter and suits smaller blades. Both are bearing motors with a 36-slot stator.
What stamping size is your E-Frame?
Our E-Frame stamping outer diameter is 120.4 mm. End shields are machined to that size.
What is a kuppa mount cooler motor?
Kuppa (also written cuppa) is the cup-shaped mounting on the motor that seats in the cooler body. The same 110 Dia motor is supplied with plain bush mount or with kuppa, depending on the cooler body you build.
Which 110 Dia motor is used in a tower cooler?
The slim 18 mm and 19 mm stack motors. In the market they are asked for as Tower Motor or tower cooler motor.
Where is a 100 Dia motor used instead of 110 Dia?
In smaller cooler bodies where the motor seat is cut for a 100 mm round motor. Measure the outer diameter of the old motor body to be sure which one you need.
Why is it called a Bachcha motor?
Bachcha means small or child. It is the smallest regular cooler motor, used in mini coolers, and the name has stuck across the market.
Blades and parts
Why does a wrong fan blade burn a cooler motor?
A blade that is too large, too steeply pitched or too heavy makes the motor work harder than it is wound for. Current rises, the winding overheats and the insulation fails. This is the most common cause of a burnt cooler motor.
Can I use a metal blade on a small cooler motor?
Not on the 89 Dia Bachcha motor, which takes a plastic blade up to 12 inch only. Metal blades belong on bearing motors such as the H-Frame.
Does using the wrong blade affect warranty?
Yes. Damage from a blade outside the recommended size or material is overloading and is not covered under warranty.
What are the main parts of a cooler motor?
Stator with winding, rotor with shaft, two end shields carrying a bush or bearing, the shell or body, a running capacitor and the lead wire.
Which parts of an air cooler does NEXPOWER make?
The motor and its components: end shields, shafts, rotors, shells, wound stators and stampings. Fan blades, water pumps, cooling pads, grills and cooler bodies are made by other manufacturers.
Do you supply parts loose, without the motor?
Yes. Assemblers and rewinders who wind in-house buy shafts, rotors, shell bodies, stampings, end shields and hardware as loose components.
Will your parts fit motors of other brands?
Many will, because most cooler motor bodies are built to the same frame standards. Send a photo or the dimensions of the part you are replacing and we confirm before you order.
Solar
Who carries out the solar work?
Solar projects are designed and installed by our sister concern FutureTech Electricals, Faridabad, under the same management. FutureTech is a Luminous-authorised solar partner and also builds the LT panels used in the plant.
What sizes of solar plant do you install?
Home rooftop plants up to 10 kW, and industrial and commercial plants of 1 to 3 MW on a complete supply, installation, testing and commissioning basis.
Do you handle net metering?
Yes. Net-metering paperwork with the electricity distribution company is handled as part of an on-grid rooftop installation.
Is a subsidy available on home rooftop solar?
Central government subsidy for residential rooftop solar is available under the PM Surya Ghar scheme, subject to the rules in force at the time. We guide you through the application.
How many kW of solar does a home need?
As a rule of thumb, 1 kW of panels gives about 4 units a day, or about 120 units a month. Divide your monthly units by 120 for a first estimate.
How much roof area is needed?
About 90 to 100 square feet of shadow-free roof per kW.