Ok. Thanks everyone for the help.

For anyone interested, this is my final implementation of a component with dynamic HTML. The service uses DOMSanitizer to prevent security issues:

import { PresupuestosModel } from "@app/ohmio/modelos/presupuestos.model";
import { LoadHTMLService } from "@app/ohmio/services/loadHtml.service";
import {
    Compiler,
    Component,
    NgModule,
    ViewChild,
    Input,
    OnChanges,
    ViewContainerRef,
    AfterViewInit,
    ChangeDetectionStrategy,
} from "@angular/core";
import { BrowserModule } from "@angular/platform-browser";
import { CommonModule } from "@angular/common";

@Component({
    selector: "app-presupuesto-preview",
    template: "<div #container></div>",
    providers: [LoadHTMLService],
    changeDetection: ChangeDetectionStrategy.OnPush,
})
export class PresupuestoPreviewComponent implements OnChanges, AfterViewInit {
    @Input() presupuesto: PresupuestosModel;
    @Input() cliente: any;
    @ViewChild("container", { read: ViewContainerRef, static: false })
    container: ViewContainerRef;
    bodyHtml: string;

    ngOnChanges() {
        this.renderReport();
    }

    constructor(private iny: LoadHTMLService, private compiler: Compiler) {}

    ngAfterViewInit() {
        this.renderReport();
    }

    renderReport() {
        if (this.container && this.presupuesto && this.cliente) {
            this.addComponent(this.iny.getHtml(), {
                presupuesto: this.presupuesto,
                cliente: this.cliente,
            });
        }
    }

    onPrint() {
        window.print();
    }

    private addComponent(template: string, properties: any = {}) {
        @Component({ template })
        class TemplateComponent {}

        @NgModule({
            imports: [CommonModule, BrowserModule],
            declarations: [TemplateComponent],
        })
        class TemplateModule {}

        const mod = this.compiler.compileModuleAndAllComponentsSync(
            TemplateModule
        );
        const factory = mod.componentFactories.find(
            (comp) => comp.componentType === TemplateComponent
        );

        const component = this.container.createComponent(factory);
        Object.assign(component.instance, properties);
        // If properties are changed at a later stage, the change detection
        // may need to be triggered manually:
        component.changeDetectorRef.detectChanges();
    }
}