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KitchenAid® 30'' 1000-Watt Microwave Hood Combination Oven, Architect® Series II


This convection microwave oven allows you to roast and bake foods quickly and evenly. A convenient built-in ventilation system has a 300 CFM motor. Four speeds offer adjustable venting to accommodate most cooking methods.

Use & Care Guide

Comprehensive information about your new appliance - from getting started to cleaning and maintenance.


Installation Guide

Instructions for unpacking and installing your appliance, including electrical requirements and necessary tools.


Warranty Information

A complete description of your warranty coverage, and contact information for service and support.


Dimension Guide

Detailed dimensions of your new appliance with space requirements for the area surrounding it.


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Below are only the articles for your model.

Accessories you'll want

Part # 8206230A
Replace your charcoal microwave hood filter every 6 months to improve air circulation and remove odors. Dimensions are 5" by 5.375" by 0.375". Measure your current filter to assure correct replacement.
MSRP: $7.99
Part # 8171339
This Microwave Filler Kit is the perfect solution for installing a 30" microwave in a 36" opening. Simply install the Microwave Filler Kit and its components on both sides of the microwave to fill the space on each side.
MSRP: $219.99
Part # W10164745
Microwave filler kit that fills gaps between microwave and cabinet. Dimensions are 17.322" Wide x 12" Height x 2.95" Depth.
MSRP: $123.99
Part # W10355010
Use the powerful cleaning action of affresh™ Kitchen & Appliance Cleaner to cut through the residue and leaves a streak-free shine. It leaves behind a pleasant citrus scent. Cleans everyday kitchen spills.
MSRP: $4.99
Part # W10355016
Affresh™ stainless steel cleaner leaves a streak-free and polished shine. It gently cleans fingerprints, smudges and residue. Use stainless steel cleaner on refrigerators, dishwashers, ranges, and microwaves.
MSRP: $6.99
Part # 31462A
Stainless Steel Appliance Cleaner and Polish keeps stainless steel surfaces shining like new. Its powerful, no-shake formula works great on all appliances by removing food spills, grime, and stains. Stainless Steel Appliance Cleaner and Polish also works on grills and sinks.
MSRP: $6.99

Replacement Parts

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300 CFM, 4-Speed Fan Control

Helps maintain a fresh kitchen environment by exhausting steam and grease from the air at 300 CFM. Four speeds allow users to adjust the ventilation power to accommodate various cooking methods.

One-Touch, Auto-Cook, Auto-Reheat, and Auto-Defrost Cycles

Helps remove the guesswork from microwave cooking by adjusting cook time and power to prevent food from drying out.

Quick Defrost Cycle

Provides rapid defrosting for one pound of frozen meat, fish, or chicken.

Additional Features

Sensor Steam/Simmer Cook Cycle with Steamer Container

Features a microwave sensor that triggers a cycle that precisely steams food based on type and selected doneness. It includes a steamer container to help achieve the best cooking results.

Electronic Controls

Let you operate the microwave with the touch of a finger.

1.8 Cu. Ft. Capacity

Families will love the full-size, 1.8 cu. ft. capacity that features sensor cycles to efficiently use 1000 watts of cooking power.


Microwave Type

Configuration and Overview

Cooking Power Wattage
Convection Wattage
Quick Touch Settings
Add A Minute, Beverage, Defrost, Dinner Plate, Keep Warm, Popcorn, Potato, Reheat, Soften/Melt, Steam Cook
Sensor Cooking
Speed Cook
Vent Type
Exterior or Recirculating


Work Surface Light
Number of Racks
Turntable Diameter
Grease Filter


29 7/8
17 1/4



Product Dimensions

  • 16
  • 17 1/4
  • 29 7/8

Dimensions are for planning purposes only.
For complete information, visit owner center.

This product has been transitioned to KMHC319ESS, but there may be limited availability at your local retailer.

KitchenAid® 30'' 1000-Watt Microwave Hood Combination Oven, Architect® Series II is rated 4.1111 out of 5 by 36.
  • 2015-04-27T06:32CST
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  • loc_en_US, sid_KHMC1857WSS-NAR, PRD, sort_relevancy
  • clientName_Kitchenaid
Rated 5 out of 5 by from You will love it! We recently did a kitchen makeover and purchased all new KitchenAid appliances and love all of them. We converted from electric to gas on our oven cook top but kept the electric convection on the oven. I love the microwave convection oven because I can use it to bake smaller dishes without heating up the entire large oven.
Date published: 2013-06-26
Rated 4 out of 5 by from Love the product, not too happy with the fan loudness I wanted a double oven stove, but after looking at how low the bottom stove was I was uncertain as to what to buy. The salesman recommended the convection/microwave combination. I prefer Kitchenaid products, so I purchased the microwave. I love all the functions and being able to bake small items for everyday dinners to using the convection oven as my second oven for family parties. Because of the location of the stove my fan vents into my kitchen. The fan is extremely loud when the convection cycle is over. If I ever redo the kitchen I will have a hole cut in the ceiling and vent the fan out the attic and roof.
Date published: 2013-05-15
Rated 4 out of 5 by from High on style and price, old school electronics Our previous model was a KHHC2090S which had a 16" interior depth, #I think# true powel levels, a menu driven touchscreen and a ton of features. Unfortunately, it had ventillation issues and was discontinued. The 1857 is the nearest existing mate to our Architect series II range. It looks beautiful. Fit and finish is top notch. The door closes with the precision of a Mercedes. However, the electronics are like something out of the '80s. Power levels are created by the hard cycling of the magnetron, just like any other microwave you can pick up at Walmart for $50. For $700 I expect inverter technology. Relays click and clack in an age when quiet solid state relays #SCR's# could be subtituted for only a few dollars more. Menus are old school fluorescent display with very slow scrolling. The convection feature does not overheat the side of the unit as bad as on the old one. So, you can effectively bake with the thing. Overall, I feel the $700 went mostly to style, but it does look good when showing off the kitchen. Absolutely not a value.
Date published: 2013-09-29
Rated 1 out of 5 by from Nice features if they would have worked the first time used I bought this unit a few months ago. i set the convection oven on for the first time 4 days ago. It never heated up . I noticed that the element fan wasn't turning. Where is your quality control for your products? Had I tried every feature of this unit I would have noticed that the first day the convection element/fan was not working and the count down clock is slow. The technician came yesterday to repair the unit and had to make a phone call as to why the fan was not working. He ordered some parts for it that will arrive next week. A brand new unit that I just paid to have installed on the wall must be taken down due to defective parts.
Date published: 2013-11-08
Rated 5 out of 5 by from This is the best microwave I have ever owned. The kitchenaid microwave far exceeds any microwave I have ever owned. There are features on this that I haven't even discovered yet. Most of the cooking features are self explainatory and will walk you through them. There is definately no lack of cooking power. Overall, I will give this microwave a 9 out of 10, only due to the fact that it does not have a 30 second express button. Thanks for a great quality microwave. Mark
Date published: 2013-05-15
Rated 5 out of 5 by from Great Options! This microwave has lots of options and I use them daily. I especially like the option for selecting either "fresh" or "frozen" for veggies. The microwave "senses" and times them perfectly without guesswork from me.
Date published: 2013-05-19
Rated 5 out of 5 by from Excellent microwave We've owned this microwave for three months now and its been easy to pick up the controls and has worked flawlessly. Looks great with the matching range. Haven't used the conventional oven feature yet (maybe thanksgiving).
Date published: 2013-05-15
Rated 5 out of 5 by from easy to use and work very fast easy to use, easy to clean, look good and preforms at a high standard
Date published: 2013-05-15
  • 2015-04-27T06:32CST
  • bvseo_cps, prod_bvrr, vn_cps_3.1.1
  • cp_1, bvpage1
  • co_hasreviews, tv_0, tr_36
  • loc_en_US, sid_KHMC1857WSS-NAR, PRD, sort_relevancy
  • clientName_Kitchenaid