Installing a whole house system is not cheap—expect to drop anywhere from $1,000 to $5,000 for a decent setup. That’s like buying a used car, but instead of getting you to work, it makes your ice cubes less offensive. And don't forget maintenance: replacement filters cost around $100 to $300 per year, which is roughly the price of a fancy dinner you’ll stay home for.
If you go with a cheap system, you’ll get exactly what you pay for—water that tastes like “better than sewer, but not by much.” Trust me, your wallet will cry either way, so you might as well cry over good water.
Best Water Filtration System Whole House at Cory Gonzalez blog
The Installation Drama
Unless you’re a plumber with a vendetta against your own sanity, hire a professional. Installing a whole house filter involves cutting into your main water line, which is like performing surgery on your walls. Do it yourself, and you could flood your basement, turn your lawn into a swamp, and explain to your spouse why the cat is swimming.
One guy on Reddit tried to install his own system and ended up with a geyser in his laundry room. He now owns a kayak. Don’t be that guy.
