You want the 1 HP, and it MUST be installed before the DW install happens, as the DW will need to drain into it via the knockout plug, that has to be knocked out. Cancel the Lowes install. If you can't install the DW also, you aren't going to be able to install the disposal. It's harder than a DW install. You need someone to do all of that, plus do all new drains and supplies, and shut offs. Yes, $1500 is about right for that. Because all the guts have to be done before the DW install happens. Having a single point of responsibility for it all is what you need. Not another leaking DW, or a trip charge for nothing to happen, because none of the piping was done before the DW installer showed up.

Yikes. I obviously don’t know what I’m doing!!! I appreciate the advice. I was thinking that it would be better to have one person do it all. I just didn’t realize it would be so expensive. I guess the low install price at Lowe’s is what threw me off. Thank you.

I wonder if my homeowners insurance will cover this. They are covering everything except for the price of the new dishwasher. Appliances are never included but I wonder if installation is? I will give them a call.

Dyan, as part of the post-leak renovation, make sure to install water alarms with automatic shutoff valves at the sink…for the sink hoses and dishwasher. We also have them at the fridge, and in the laundry room for the washing machine. Has saved us from water damage several times over 7+ years.

darbuka - I just purchased a leak sensor kit from Amazon that hooks to wifi but I haven't seen anything that has automatic shutoff valves. I will have to look into that! I haven't opened this yet.

If on sewer: 1HP InSinkErator Evolution. If you have children, the "Batch" might be preferred. However, either of the two on the left are fine.

If on septic: InSinkerAtor Evolution Septic Assist is the better option. It was required in our County to allow us to have a GD since we're on septic.

(If needed, I assume you have pulled all the necessary permits & are going to have periodic inspections.)

We have regular sewer. We don't have children in the house anymore but I use my disposal a lot! I will have to look into the "Batch" option. Don't know a lot about that.

Also, I just spoke with my insurance adjuster and they will give me a bigger supplement to hire ONE plumber to do all things (dishwasher, disposal, faucet, and new pipes parts etc.). So relieved I can do it all at once and won't have to come up with more money out of pocket. Appreciate the heads up DeWayne!!!

Great!

Also classy of you to acknowledge DeWayne!

Well, I'm learning as I go and appreciate all the help. I guess I am a contractor now - LOL! My husband travels a lot and it is up to me to figure this out! I have to have all the timing worked out as far as movers, wood installers, granite & cabinet installers, and now this! It's a LOT but working out so far!

The other question on Jeopardy might be, "Who has two wrong answers on the post immediately above mine?" Answer, "Who is wdccruise?"

You DO need a cord, or you will also need an electrician to hardwire, which only adds to the expense.

Nope. Plumbers will connect an existing power cord to the disposal. Same as with the Dishwasher. The installer will connect an existing power cord to the Washing machine,

What is wrong with a batch disposal? They are the only type I have ever had and I love them. Much safer IMO.

I've always used batch feed disposals also. But since the OP is accustomed to continuous feed disposals I think she should stay with that - she's got enough on her plate as it is.

Dewayne recommended the 1 hp size, and I agree with that but with a caveat. It's nice to have such a large powerful disposal. However, you - or your plumber - must pay attention to the height of the waste pipe that is in your wall under the sink that takes the waste water out. A large disposal like a 1 hp size may so big that its waste line is lower than the waste line in your wall. That would be bad because then you would not have gravity be able to take the water out. That is often the reason why people opt for a smaller 3/4 hp disposal. Though I would never go smaller than 3/4 hp. Having said all that, Insinkerator sells millions of these 1 hp disposals; many people have waste line low enough in the wall.

It's hard to tell from this Insinkerator drawing online - it appears that your waste pipe in the wall needs to be either 11" or 13" lower than the bottom of your sink for this 1 hp disposal to work. Again, speak with your plumber.

M Miller - thank you for that. I never even thought of the height of the waste pipe. Geez - I'm getting very educated on plumbing! I will definitely talk to my plumber about this before I purchase it. wdccruise - lots of good information - thank you all! My countertop has to be reinstalled before all of this because when the plumber comes, he is installing the dishwasher, disposal and reinstalling the faucet (things changed since this morning and one plumber will do it all).

The Evolution Excel 1hp. is what I have. 40oz. stainless steel grind chamber. Stainless steel grind components. The lesser models have stainless steel grind components but a composite 32oz. grind chamber. Amazon has the Excel. Insinkerator hides the material used in their grind chamber. Call Tech Support to find the info.

evolution-excel-installation-care-use-manual-en-us-6867470.pdf (emerson.com)

Installing a dw and disposal to replace existing units is straightforward and simple. I've done it several times over the years without incident. Less than an hour for each at the most. I hope you're choosing a Miele or Bosch dw.

All Insinkerator disposers except the Evolution Excel and Evolution Prestige have the same sink-to-drain pipe distance: 6" as shown in the installation instructions:

• Standard installation instructions
• Quiet series installation instructions

Save yourself possible current and future grief from a disposal whose drain pipe is too low by buying the Evolution Compact.

• Insinkerator Evolution Compact ($204)
• Insinkerator Evolution Excel ($435)
• Insinkerator Evolution Prestige ($472)

The products pictured above including the Evolution 1hp. are the 'next gen' models. The 3/4hp and 1hp units in Advanced and Power all have the same nylon filled composite grind chamber. No unit has a stainless steel grind chamber. Buy a Excel unit off Amazon if you want the stainless steel grind chamber for longevity.

Thanks. Reading all of this! And yes I purchased a Bosch 800 dishwasher.