Heaters and air purifiers: serving seasonal demand without idle stock

A heater and purifier seller has two ways to lose the winter: sell out in ten days, or sit on cartons till Holi. Commit in three layers instead. Before the spike, ready what costs little: the pages, the paused campaigns and last winter's buyer list. Next, place a small first lot near the cities that turn cold first. Order deep stock only when your own orders show the season has begun. And fix the day you stop reordering before the season starts.

Two products, two triggers

A room heater is bought on cold. The first foggy mornings in Delhi, Lucknow, Chandigarh and the hill towns bring the orders, and the questions are about safety and the bill. Will it tip over? Is an oil-filled radiator better for a child's room than a fan heater? Will it dry the air? What will it add to the electricity bill? When the cold breaks, the orders stop.

An air purifier is bought on worry. The trigger is the air quality number in the news or a school closing for smog, and the purchase follows the headline more than the thermometer. The questions are about room size, the filter type and, above all, what a replacement filter costs and where to buy one. When rain or wind clears the air, the urgency goes with it.

So the two need separate signals, even when the same two people sell both. Keep purifier and heater claims to coverage area, filter type, noise and safety cut-offs. Copy that talks about health or treatment invites trouble, and rules on health claims differ by body and change, so check with your own adviser or the regulator before you write one.

Three layers of commitment

Treat the season as three decisions, taken at different times, with different amounts of money at risk.

Ready before the season, whatever happens. This layer costs time, not stock. Listings refreshed with room sizes. Safety features shown in the images: the tip-over switch, the overheat cut-off, a body that stays cool to the touch. The filter's price in rupees beside each purifier. Campaigns built by city and paused. A message drafted for last winter's purifier buyers about their filters, and a returns note for a heater that arrives dented.

A first lot, placed near the demand. Enough stock for the early orders from the cities that turn first, sitting in the warehouse nearest them. Size it from your own last season: roughly the orders you took before the peak, not during it.

Deep stock, committed on a signal. Order the rest when two things move together in a city: your daily orders against the same days last season, and the weather or air-quality forecast for the coming days. A cold wave in the forecast with orders already climbing is a signal. One bad air day with no rise in orders is not.

The rule underneath all three: never commit deep stock on a forecast you cannot reverse. Commit it on orders you can see, from a supplier who can deliver inside the season.

If your purifiers come by container with a long lead time, you cannot wait for the signal. Buy less, agree in writing what the importer will take back or carry over, and price to sell through.

Campaigns wait for the same signal, city by city. The paused-campaign method is in our post on air conditioner timing and pin codes.

Write the exit plan before the first cold morning

Idle stock is made at the end, not the start. The seller reorders at the peak, and the cold breaks before the lot arrives. So the exit gets written first, on one card, before a single carton is ordered:

• Stop date for heaters. After this day nothing new is ordered, however busy the week looks. Set it from the day your orders fell away last winter, less your supplier's delivery time.
• A separate stop date for purifiers, because smog and cold do not leave together.
• Leftover heaters. Hold units whose model will still be current, if cash and space allow. Clear the rest to an offline dealer before summer.
• Purifiers still in the godown go back to the importer if that was agreed in writing. Offer the rest to offices and schools, which buy outside the panic weeks.
• When clearance begins: the order level, held for a stretch, below which prices come down.

Put the card where the person who places orders can see it.

The filter is the part of this category that sells all year. A household that bought a purifier last winter will need a filter at some point, depending on use and the maker's advice. A short reminder with the right filter for their model turns a seasonal product into a repeat one. Our note on encouraging repeat purchases covers the messages.

For example: the lot that arrived after the rain

For example, take a two-person online store in Noida selling oil-filled heaters and purifiers on a marketplace and its own site. The figures are illustrative. In one smoggy week, purifier orders jumped to several times normal, and the owner reordered 300 units on the strength of it. The lot arrived nine days later. Rain had cleared the air, the news had moved on, and orders were back to a trickle. Two hundred units sat in the godown until the next winter, a model year older.

The next season the owner worked in layers. A first lot of 80. A top-up agreed with a distributor in the same city who could deliver in two days. A rule that deep orders needed a forecast and three days of rising orders together. The store ran out once, for two days, and missed perhaps 25 orders at a margin of ₹1,500 each, about ₹37,000. The earlier mistake had tied up 200 cartons, roughly ₹10 lakh at cost, for the best part of a year.

When to stay out

If you cannot supply replacement filters for every purifier you list, do not list that purifier; the buyer who cannot find a filter writes the review. If holding stock for a year would strain the business, keep the heater range small or leave heaters to someone else.

Write the exit card first

Start with the exit card, not the order. Write the two stop dates and where leftover cartons will go, then size the first lot. Seasonal sellers are one of the groups on our e-commerce sales and marketing page, and the listings around all this are e-commerce and marketplace marketing work. If you want the pages and the plan ready before the next cold, tell us what you need.