I am not aware of a dedicated appliance store on the north coast. Many stores have a small section with appliances. you Might have to go to Santiago and Corripio who do have a website. Hopefully someone can come up with some suggestions.
Corripio in Puerto Plata have nice a assortment of brand name appliances. I bought a Whirlpool fridge, chest freezer and washer there. Great prices with free delivery to Sosua. They even apply discounts when paying by credit card.
Corripio is easily the best place for appliances you will get on the North Coast, and possibly in the DR. And when you buy something there be sure to ask for a discount. I have been getting 10% off on anything there for 11 years. I registered with my business card once and it is in the computer.
Personally I would not recommend Corripio in Puerto Plata. Their store there is just like a warehouse, and they have very few things actually there. I went there a couple of months back asking for a specific product that I had seen that they had on their website. They didn't have that specific product, but told me that they would make sure to bring it the following week. So a half-interested person took down my contact information so that they would contact me the following week. Nobody contacted me, but I passed by the store as I was nearby. The item and not arrived and they had not even bothered to making sure that it would arrive. Once again they told me that they would make sure the truck from Santiago brought that specific item for me the following week, and of course they would call me when it was available. Again nobody contacted me, so about 2 weeks later I entered the store to check again if it was there, and not to my surprise, nope, still not and they didn't have any notation that the specific item had been requested. So I just said thank you but don't bother trying again. And compared to other stores, they aren't cheap, a couple of years back I was going to buy a new fridge and went to them but found the same fridge for 10000 pesos less at another store. So, would not recommend them after the experiences I've had with them.
Yes I totally understand. I get the same indifference most places I go but I’m sure they get a lot of orders for things and people never come back and they’re stuck with the part. Covid has made things so tough for everyone and you really can’t blame anyone for being cautious. Thank you all for your responses.